| 5494988 |
Neonectria canker |
Neonectria galligena |
|
| 5494435 |
burl and decay |
|
|
| 5494436 |
burl and decay |
|
|
| 5494437 |
burl and decay |
|
|
| 5492739 |
burl and decay |
|
|
| 5492738 |
burl and decay |
|
|
| 5492737 |
burl and decay |
|
|
| 5492377 |
oak wilt |
Ceratocystis fagacearum |
veinal necrosis |
| 5490216 |
Thousand Cankers Disease |
Geosmithia morbida |
Canker produced by Geosmithia morbida around gallery of walnut twig beetle in southern California walnut |
| 5488694 |
Phytophthora root and crown rot |
Phytophthora cambivora |
symptomps of Phytophthora cambivora infection on European chestnut |
| 5488698 |
chestnut blight or canker |
Cryphonectria parasitica |
Cryphonectria parasitica canker on chestnut branch |
| 5488709 |
Phytophthora root and crown rot |
Phytophthora cambivora |
tree mortality caused by Phytophthora cambivora on European chestnut stand |
| 5411358 |
black spot of elm |
Stegophora ulmea |
leaf spots |
| 5483039 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
Butternut canker symptoms before (bottom) and after (top) bark is removed. |
| 5479920 |
bacterial leaf scorch |
Xylella fastidiosa |
A yellow border between green and necrotic tissue is a typical symptom of bacterial leaf scorch |
| 5479921 |
bacterial leaf scorch |
Xylella fastidiosa |
A yellow border between green and necrotic tissue is a typical symptom of bacterial leaf scorch |
| 5479814 |
bacterial leaf scorch |
Xylella fastidiosa |
A yellow border between green and necrotic tissue is a typical symptom of bacterial leaf scorch |
| 5479815 |
bacterial leaf scorch |
Xylella fastidiosa |
A yellow border between green and necrotic tissue is a typical symptom of bacterial leaf scorch |
| 5479816 |
bacterial leaf scorch |
Xylella fastidiosa |
A yellow border between green and necrotic tissue is a typical symptom of bacterial leaf scorch? |
| 5479817 |
bacterial leaf scorch |
Xylella fastidiosa |
A yellow border between green and necrotic tissue is a typical symptom of bacterial leaf scorch? |
| 5411480 |
quince rust |
Gymnosporangium clavipes |
|
| 5476484 |
Septoria leaf spot |
Septoria betulae |
Symptoms (Aug.10) |
| 5476433 |
Phoma blight |
Phoma exigua var. exigua |
Symptoms |
| 0660023 |
bacterial blight |
Xanthomonas arboricola pv. corylina |
On a layered hazel shoot in the process of rooting, dieback after necrosis of a new lateral shoot, due to Xanthomonas campestris pv. corylina. |
| 0660024 |
bacterial blight |
Xanthomonas arboricola pv. corylina |
In orchard, on a 3-year-old hazel tree, dieback of several 1- and 2-year-old shoots starting from localized necrosis on buds or new lateral shoots, due to Xanthomonas campestris pv. corylina |
| 5445852 |
green alga |
Cephaleuros virescens |
|
| 5445854 |
green alga |
Cephaleuros virescens |
|
| 5043025 |
sudden oak death |
Phytophthora ramorum |
|
| 5043027 |
sudden oak death |
Phytophthora ramorum |
|
| 5043028 |
sudden oak death |
Phytophthora ramorum |
|
| 5043029 |
sudden oak death |
Phytophthora ramorum |
|
| 5043030 |
sudden oak death |
Phytophthora ramorum |
|
| 5043020 |
sudden oak death |
Phytophthora ramorum |
|
| 5043023 |
sudden oak death |
Phytophthora ramorum |
|
| 5043024 |
sudden oak death |
Phytophthora ramorum |
|
| 5468324 |
smooth patch of oak |
Aleurodiscus oakesii |
|
| 5468285 |
ink spot leaf blight |
Ciborinia whetzelii |
|
| 5468286 |
ink spot leaf blight |
Ciborinia whetzelii |
|
| 5468325 |
smooth patch of oak |
Aleurodiscus oakesii |
single tree |
| 5468327 |
smooth patch of oak |
Aleurodiscus oakesii |
|
| 5468328 |
smooth patch of oak |
Aleurodiscus oakesii |
multiple trees |
| 5468326 |
smooth patch of oak |
Aleurodiscus oakesii |
|
| 5461538 |
black knot |
Apiosporina morbosa |
|
| 5461539 |
black knot |
Apiosporina morbosa |
|
| 5468287 |
ink spot leaf blight |
Ciborinia whetzelii |
|
| 5461540 |
black knot |
Apiosporina morbosa |
|
| 5461541 |
black knot |
Apiosporina morbosa |
|
| 5461542 |
black knot |
Apiosporina morbosa |
|
| 5461543 |
black knot |
Apiosporina morbosa |
|
| 5458324 |
Thousand Cankers Disease |
Geosmithia morbida |
Thousand cankers disease showing walnut twig beetle galleries and Geosmithia morbida cankers on black walnut. |
| 5458329 |
Thousand Cankers Disease |
Geosmithia morbida |
Thousand cankers disease symptoms of flagging on a mature black walnut. |
| 5458330 |
Thousand Cankers Disease |
Geosmithia morbida |
Thousand cankers disease symptoms on a mature black walnut. |
| 5458331 |
Thousand Cankers Disease |
Geosmithia morbida |
Thousand cankers disease symptoms of flagging on a mature black walnut. |
| 5458332 |
Thousand Cankers Disease |
Geosmithia morbida |
Thousand cankers disease symptoms of flagging on a mature black walnut. |
| 5458333 |
Thousand Cankers Disease |
Geosmithia morbida |
Thousand cankers disease symptoms of advanced decline on a mature black walnut. |
| 5458334 |
Thousand Cankers Disease |
Geosmithia morbida |
Thousand cankers disease symptoms of advanced decline on a mature black walnut. |
| 5458335 |
Thousand Cankers Disease |
Geosmithia morbida |
Thousand cankers disease symptoms of advanced decline on a mature black walnut. |
| 1457008 |
black ash decline |
|
General decline in wetland black ash, regionally widespread in northern MN, WI and MI in 2003-2005. The cause is undetermined though drought is likely in this instance. Tree mortality did occur, crown dieback and decline was common. Photo taken near Cloquet, MN, 2005. |
| 5445582 |
leaf curl |
Taphrina communis |
|
| 5445583 |
leaf curl |
Taphrina communis |
A healthy early-stage plum directly next to a diseased plum. |
| 5445584 |
leaf curl |
Taphrina communis |
|
| 1247182 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 4215048 |
Dutch elm disease |
Ophiostoma ulmi |
early wilt symptoms |
| 1224001 |
powdery mildew |
Microsphaera penicillata |
|
| 1458054 |
Dutch elm disease |
Ophiostoma ulmi |
1999 |
| 3570063 |
nutrient deficiency |
|
|
| 1277122 |
bacterial canker of poplar |
Xanthomonas populi |
Canker reaction tissue |
| 1277125 |
bacterial canker of poplar |
Xanthomonas populi |
Artificially inoculated stem |
| 5444374 |
black knot |
Apiosporina morbosa |
Basketball sized gall on trunk |
| 5444375 |
black knot |
Apiosporina morbosa |
Basketball sized gall on trunk |
| 5444376 |
black knot |
Apiosporina morbosa |
Basketball sized gall on trunk |
| 5444377 |
black knot |
Apiosporina morbosa |
Close up on trunk gall |
| 5444378 |
black knot |
Apiosporina morbosa |
Large basketball sized gall on trunk |
| 5444379 |
black knot |
Apiosporina morbosa |
Large basketball sized gall on trunk |
| 5444380 |
black knot |
Apiosporina morbosa |
Large basketball sized gall on trunk |
| 1427003 |
sudden oak death |
Phytophthora ramorum |
|
| 1427001 |
sudden oak death |
Phytophthora ramorum |
|
| 1415156 |
Phytophthora root and crown rot |
Phytophthora cambivora |
On oak leaves as baiting trap. Sept. 13, 2002 |
| 1457006 |
black ash decline |
|
General decline in wetland black ash stands. Cause undetermined, though regional drought conditions are the most likely cause. Widespread tree mortality as well as branch dieback. Common across northern MN and WI in 2003-2005. Photo taken near Cloquet, MN, 2005. |
| 1406251 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406112 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 4825028 |
Neonectria canker |
Neonectria galligena |
rough bark at root collar. |
| 4822063 |
ash rusts |
Puccinia sparganioides |
Leaf distortion, petiole hypertrophy and distinctive pycnia and aecial "cluster cup" with orange-yellow aeciospores proliferating from the surface of infected tissue. |
| 4554082 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
|
| 4449039 |
oak anthracnose |
Apiognomonia errabunda |
|
| 4215062 |
oak wilt |
Ceratocystis fagacearum |
vascular discoloration in red oak |
| 4214030 |
leaf scorches |
|
|
| 4213046 |
Strumella canker |
Urnula craterium |
canker on main stem |
| 4212049 |
galls |
|
|
| 3047004 |
oak decline |
|
Mark Twain National Forest in Missouri |
| 3046075 |
sycamore dieback |
|
crown thinning |
| 2651050 |
beech bark canker |
Neonectria coccinea var. faginata |
|
| 2651051 |
beech bark canker |
Neonectria coccinea var. faginata |
cankers |
| 2252014 |
canker and die back of Siberian Elm |
Tubercularia ulmea |
canker on white poplar |
| 2252011 |
robustus conk |
Phellinus robustus |
cross-section of decayed stem |
| 2251076 |
oak anthracnose |
Apiognomonia errabunda |
leaf symptoms |
| 2251073 |
Cryptosphaeria canker |
Cryptosphaeria ligniota |
|
| 2251062 |
Strumella canker |
Urnula craterium |
on main stem |
| 0364038 |
anthracnose |
Colletotrichum acutatum |
leaf spot symptoms |
| 0364012 |
Cylindrocladium root diseases |
Cylindrocladium spp. |
on eucalyptus |
| 0364007 |
poplar rust |
Melampsora medusae |
on cottonwood |
| 1301060 |
Eutypella canker |
Eutypella parasitica |
|
| 1436062 |
crown gall |
Rhizobium radiobacter |
on roots |
| 1406114 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406106 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1399112 |
shepherd's crook leaf and shoot blight |
Venturia populina |
|
| 1399050 |
sapstreak disease of sugar maple |
Ceratocystis coerulescens |
|
| 1361158 |
black knot |
Apiosporina morbosa |
|
| 4823018 |
Inonotus heartrot |
Inonotus rickii |
Advanced wood decay. Note the distinct, narrow darkened zones of sound wood at the martgins of the decayed wood. |
| 4822040 |
Dutch elm disease |
Ophiostoma ulmi |
Foliage wilting, flagging (yellow), defoliation, and crown dieback |
| 4215066 |
oak wilt |
Ceratocystis fagacearum |
foliar symptoms on northern red oak |
| 4213072 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
dieback |
| 0162018 |
bacterial spot of stone fruits |
Xanthomonas arboricola pv. pruni |
Old angular spots on a plum leaf cv. Calita. |
| 1436061 |
wood decay |
Schizophyllum commune |
also called trunk rot |
| 1399115 |
Dothiorella gummosis and rot |
Dothiorella gregaria |
|
| 1301033 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt in a young group of pin oaks |
| 4449025 |
nutrient deficiency |
|
|
| 0488100 |
chestnut blight or canker |
Cryphonectria parasitica |
diseased chestnut |
| 1301076 |
Dutch elm disease |
Ophiostoma ulmi |
Crown symptoms of Dutch elm disease on a large street tree. |
| 1234089 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 1234088 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 1427102 |
sudden oak death |
Phytophthora ramorum |
Bark cracks and bleeding on coast live oak. |
| 1427095 |
sudden oak death |
Phytophthora ramorum |
Coast live oak mortality from P. ramorum infection at China Camp State Park, CA. |
| 1427071 |
sudden oak death |
Phytophthora ramorum |
Coast live oak dying from P. ramorum infection, China Camp State Park, CA. |
| 1427052 |
sudden oak death |
Phytophthora ramorum |
Tanoak dying from P. ramorum infection, Muir Woods State Park, CA. |
| 1427048 |
sudden oak death |
Phytophthora ramorum |
Tanoak dying from P. ramorum infection, Muir Woods State Park, CA. |
| 1427050 |
sudden oak death |
Phytophthora ramorum |
Tanoak sprouts dying from P. ramorum infection. |
| 1427034 |
sudden oak death |
Phytophthora ramorum |
|
| 1427046 |
sudden oak death |
Phytophthora ramorum |
|
| 1427047 |
sudden oak death |
Phytophthora ramorum |
Tip dieback caused by P. ramorum on tanoak. |
| 1427041 |
sudden oak death |
Phytophthora ramorum |
Big Sur, California |
| 1427035 |
sudden oak death |
Phytophthora ramorum |
Big Sur, California |
| 1427033 |
sudden oak death |
Phytophthora ramorum |
|
| 1427020 |
sudden oak death |
Phytophthora ramorum |
Big Sur, California |
| 1427021 |
sudden oak death |
Phytophthora ramorum |
Big Sur, California |
| 1406104 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1427023 |
sudden oak death |
Phytophthora ramorum |
Big Sur, California |
| 1371069 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
Necrotic spots on cotyledons and white powder of Fusarium spores. Jochy, Slovakia |
| 0355036 |
Dutch elm disease |
Ophiostoma ulmi |
advanced symptoms on American elm |
| 0364006 |
ash leaf spot |
Mycosphaerella fraxinicola |
foliage damage |
| 4822031 |
Inonotus heartrot |
Inonotus rickii |
Cushion/pad-like structure (an apparent sporocarp initial) at branch stub. Note sap running from decay site |
| 4822032 |
Inonotus heartrot |
Inonotus rickii |
Advanced wood decay in branch. Note the distinct, narrow darkened zones of sound wood at the margins of the decayed wood, and the dark mass of sterile hyphae at the branch stub. |
| 0454025 |
chestnut blight or canker |
Cryphonectria parasitica |
Long, orange-yellow tendrils of Cryphonectria parasitica pycnidiospores exuding from pycnidia on chestnut tree bark. |
| 1427019 |
sudden oak death |
Phytophthora ramorum |
Big Sur, California |
| 1427004 |
sudden oak death |
Phytophthora ramorum |
|
| 3047017 |
Spiculosa canker |
Phellinus spiculosa |
|
| 3040022 |
nutrient deficiency |
|
|
| 3040071 |
nutrient deficiency |
|
|
| 1198002 |
Neonectria canker |
Neonectria galligena |
on birch |
| 1415053 |
anthracnose |
Apiognomonia quercina |
leave stalk necrosis. June 10, 2002 |
| 1415064 |
Marssonina leaf spot |
Marssonina salicicola |
Anthracnose on branches. June 25, 2002 |
| 1427016 |
sudden oak death |
Phytophthora ramorum |
Big Sur, California |
| 2652018 |
black rot |
Ceratocystis fimbriata |
on quaking aspen in interior Alaska |
| 1427109 |
sudden oak death |
Phytophthora ramorum |
|
| 4213006 |
willow scab |
Venturia saliciperda |
tip dieback |
| 4215015 |
Marssonina leaf spot |
Marssonina tremulae |
infected aspen leaf |
| 4822085 |
Botryosphaeria canker |
Botryosphaeria dothidea |
crown thinning and dieback |
| 5021028 |
Elm yellows |
Phytoplasma N/A |
|
| 5021027 |
Elm yellows |
Phytoplasma N/A |
|
| 1371007 |
trunk rot |
Ustulina deusta |
broken tree due to white rot of butt roots |
| 3040021 |
nutrient deficiency |
|
|
| 2733033 |
Dutch elm disease |
Ophiostoma ulmi |
Initial flagging (yellowing) of branches in crown. |
| 1415110 |
tracheomycosis |
|
July 23, 2002 |
| 1442052 |
Dutch elm disease |
Ophiostoma ulmi |
Ceratacystid ulmi dying tree Ulmus americana Milliken ,CO7-16-74 |
| 1406128 |
beech bark disease |
Nectria coccinea |
severe damage |
| 4215053 |
black rot |
Ceratocystis fimbriata |
cankers on aspen |
| 1427022 |
sudden oak death |
Phytophthora ramorum |
Big Sur, California |
| 1427051 |
sudden oak death |
Phytophthora ramorum |
Tanoak sprouts dying from P. ramorum infection. |
| 1198008 |
iron deficiency |
|
Chlorosis caused by iron deficiency |
| 5437607 |
oak anthracnose |
Apiognomonia errabunda |
|
| 1415158 |
Phytophthora root and crown rot |
Phytophthora cambivora |
Sept. 13, 2002 |
| 1399046 |
sapstreak disease of sugar maple |
Ceratocystis coerulescens |
note small leaves |
| 1399026 |
nutrient deficiency |
|
chlorosis |
| 1399027 |
nutrient deficiency |
|
chlorosis |
| 1427080 |
sudden oak death |
Phytophthora ramorum |
Tanoak dying from P. ramorum infection, Muir Woods State Park, CA. |
| 1427096 |
sudden oak death |
Phytophthora ramorum |
Tanoak dying from P. ramorum infection at Muir Woods. |
| 1371025 |
Neonectria cankers |
Neonectria spp. |
Many small cankers. Banský Studenec, Slovakia |
| 4215016 |
Marssonina leaf spot |
Marssonina tremulae |
defoliated stand |
| 4215055 |
sooty-bark canker |
Encoelia pruinosa |
canker on aspen |
| 1427049 |
sudden oak death |
Phytophthora ramorum |
Tanoak dying from P. ramorum infection. |
| 2139070 |
oak leaf blister |
Taphrina caerulescens |
|
| 3046077 |
bacterial leaf scorch |
Xylella fastidiosa |
symptoms in sycamore plantation |
| 3226027 |
oak wilt |
Ceratocystis fagacearum |
root graft |
| 4554042 |
tar spots |
Rhytisma spp. |
|
| 4823002 |
Armillaria root rot |
Armillaria tabescens |
Infected trees on Jonathan Dickinson State Park, Florida USA |
| 5021075 |
Phytophthora root rot |
Phytophthora cactorum |
dieback |
| 5021044 |
Elm yellows |
Phytoplasma N/A |
|
| 5021063 |
Elm yellows |
Phytoplasma N/A |
|
| 5021073 |
Phytophthora root rot |
Phytophthora cactorum |
dieback |
| 5021058 |
Elm yellows |
Phytoplasma N/A |
|
| 5021059 |
Elm yellows |
Phytoplasma N/A |
|
| 5021072 |
Phytophthora root rot |
Phytophthora cactorum |
mortality |
| 4213093 |
Dutch elm disease |
Ophiostoma ulmi |
dead and dying trees |
| 4213071 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
large canker |
| 4213100 |
oak wilt |
Ceratocystis fagacearum |
old fungal mats |
| 4822099 |
Armillaria root rot |
Armillaria tabescens |
Mycelial felt on base of stem of India Rosewood |
| 1427110 |
sudden oak death |
Phytophthora ramorum |
|
| 1415230 |
Armillaria root rots |
Armillaria spp. |
Necrotic bark. Aug. 25, 2003 |
| 1415210 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
Leaf necrosis on seedling. July 8, 2003 |
| 1415153 |
trunk rot |
Ustulina deusta |
Pseudosclerotic layers. Sept. 13, 2002 |
| 1406126 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406120 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406115 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406119 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1399129 |
Marssonina blight of poplar |
Marssonina populi |
|
| 1399121 |
corky bark disease |
Diplodia tumefaciens |
|
| 1371030 |
Inonotus canker |
Inonotus nidus-pici |
Hole in the trunk. Lucenec, Slovakia |
| 1344023 |
beech bark disease |
Nectria coccinea |
Beech death at a high elevation beech gap |
| 1238016 |
Hypoxylon cankers |
Hypoxylon spp. |
Hypoxlon canker 1 year after visual detection. |
| 0010133 |
oak leaf blister |
Taphrina caerulescens |
|
| 1415159 |
Phytophthora root and crown rot |
Phytophthora cambivora |
Sept. 13, 2002 |
| 1238015 |
Strumella canker |
Urnula craterium |
Blue Ridge, SC. |
| 4823001 |
Armillaria root rot |
Armillaria tabescens |
Dead trees at Jonathan Dickinson State Park, Florida USA |
| 1396141 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 1396150 |
Nectria canker |
Nectria spp. |
|
| 4214004 |
oak wilt |
Ceratocystis fagacearum |
infection center |
| 2251071 |
Cytospora canker |
Valsa sordida |
stem canker |
| 2251074 |
Marssonina blight of poplar |
Marssonina populi |
infected aspen leaves |
| 2251061 |
Septoria leaf spot and canker |
Septoria populicola |
leaf spots on cottonwood |
| 2251070 |
Cytospora canker |
Valsa sordida |
|
| 1399047 |
sapstreak disease of sugar maple |
Ceratocystis coerulescens |
typical fresh stain on buttress root |
| 1427030 |
sudden oak death |
Phytophthora ramorum |
|
| 1415081 |
chestnut blight or canker |
Cryphonectria parasitica |
Bark necrosis. July 11, 2002 |
| 1399078 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 1399080 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 1399077 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 1399022 |
Nectria canker |
Nectria spp. |
|
| 1400144 |
Eutypella canker |
Eutypella parasitica |
canker on maple in a Wisconsin sugarbush stand. |
| 1400120 |
Phomopsis cankers and twig blights |
Phomopsis spp. |
Phomopsis galls on the main stem of bitternut hickory in Wisconsin. |
| 1400103 |
Armillaria root rots |
Armillaria spp. |
Dying aspen, Nicolet National Forest, Wisconsin. Bark cut away to show strip kill on stem. Bark on root cut away to show armillaria rhizomorphs. See image #1400102. |
| 1400041 |
clinker polypore |
Inonotus obliquus |
Conk on live paper birch, Ottawa National Forest, Michigan. |
| 1400024 |
white heartwood rot |
Phellinus tremulae |
Nicolet National Forest |
| 1400040 |
clinker polypore |
Inonotus obliquus |
conk on live paper birch, Ottawa National Forest, Michigan. |
| 1442141 |
black rot |
Ceratocystis fimbriata |
|
| 1371103 |
Pezicula fungus |
Pezicula cinnamomea |
Cankers. Göttingen, Germany |
| 1371024 |
beech bark disease |
Nectria coccinea |
susceptibility of two trees growing close to each other. Banský Studenec, Slovakia |
| 1442142 |
Phyllosticta leaf spots |
Phyllosticta spp. |
Gunnison National Forest |
| 1371011 |
Phytophthora root and crown rot |
Phytophthora cambivora |
Stand symptoms. Story, Germany |
| 0454016 |
Dutch elm disease |
Ophiostoma ulmi |
Elm tree severely attacked by Ophiostoma ulmi in late summer, showing a range of foliar symptoms. |
| 1397105 |
Armillaria root rots |
Armillaria spp. |
Root failure. |
| 1301074 |
Dutch elm disease |
Ophiostoma ulmi |
Large specimen elm tree killed |
| 1301055 |
Eutypella canker |
Eutypella parasitica |
cobra-head canker |
| 1301059 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt pocket in urban landscape |
| 1400142 |
Septoria leaf spot and cankers |
Septoria spp. |
On a susceptible clone of hybrid poplar. |
| 1400172 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 4822082 |
Phytophthora basal canker |
Phytophthora palmivora |
canker initially 30 inches off ground, 6 months later - 11 feet off ground as infection progresses into tree stem and scaffold branches |
| 4822086 |
Botryosphaeria canker |
Botryosphaeria dothidea |
advanced symptoms and damage. |
| 4822078 |
Phytophthora basal canker |
Phytophthora palmivora |
Droplets of discolored sap exuding from infected bark tissues. |
| 4823019 |
Inonotus heartrot |
Inonotus rickii |
Decayed wood in center exhibiting typical yellow-brown to white color and is seperated from sound wood by a distinct zone of dark-stained wood. |
| 4823026 |
bacterial wetwood |
Enterobacter nimipressuralis |
Symptomatic discolored bark. A branch scar is the "source" of the slime flux. |
| 4822100 |
orange hobnail canker |
Cryphonectria gyrosa |
Thinning crown in infected tree where roots are exposed at soil surface from traffic & maintenance. Lake Wales, Florida USA |
| 4822051 |
bacterial leaf scorch |
Xylella fastidiosa |
healthy tree & trees infected with Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. |
| 5021060 |
Elm yellows |
Phytoplasma N/A |
|
| 5021061 |
Elm yellows |
Phytoplasma N/A |
|
| 5021046 |
Elm yellows |
Phytoplasma N/A |
|
| 1442057 |
Dothichiza canker |
Dothichiza populea |
Dothichiza |
| 1371023 |
beech bark disease |
Nectria coccinea |
Fresh canker. Banský Studenec, Slovakia |
| 1470120 |
Septoria leaf spot and cankers |
Septoria spp. |
|
| 1470116 |
Phomopsis cankers and twig blights |
Phomopsis spp. |
|
| 1415063 |
Mycosphaerella leaf spot |
Mycosphaerella microsora |
Necrotic spots on leaves. June 25, 2002 |
| 1415079 |
chestnut blight or canker |
Cryphonectria parasitica |
Branch dieback. July 11, 2002 |
| 1415066 |
Marssonina leaf spot |
Marssonina salicicola |
Anthracnose on branches. June 25, 2002 |
| 1415118 |
Marssonina leaf spot |
Marssonina juglandis |
Leaf necrosis. July 26, 2002 |
| 1415084 |
leaf spot |
Mycosphaerella maculiformis |
Necrotic spots. July 11, 2002 |
| 1415003 |
oak decline |
|
May, 2001 |
| 1371017 |
Phytophthora root and crown rot |
Phytophthora cambivora |
Necrosis on the roots and root collar. Story, Germany |
| 1427036 |
sudden oak death |
Phytophthora ramorum |
|
| 4822087 |
Botryosphaeria canker |
Botryosphaeria dothidea |
note the discoloration on vascular tissue, 3/4 dead. Only the light-colored section is alive. |
| 1415161 |
common tarcrust |
Diatrype stigma |
March 24, 2003 |
| 4822077 |
Phytophthora basal canker |
Phytophthora palmivora |
Basal canker (6 feet off the ground) with dark staining and discoloration of infected bark. Naples, Florida, USA |
| 4822083 |
Neonectria canker |
Neonectria galligena |
Burlike galls |
| 4822030 |
Inonotus heartrot |
Inonotus rickii |
decay at branch stubs - note sap running |
| 4823005 |
Ganoderma root and butt rot |
Ganoderma lucidum |
thinning crown of infected tree |
| 3047012 |
Armillaria root rots |
Armillaria spp. |
white fungal mat under bark |
| 3046072 |
bacterial leaf scorch |
Xylella fastidiosa |
|
| 1436140 |
oak leaf blister |
Taphrina caerulescens |
|
| 1399079 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 2139066 |
leaf blister of maple |
Taphrina sacchari |
|
| 2168056 |
wheat stem rust |
Puccinia graminis |
|
| 1415155 |
Phytophthora root and crown rot |
Phytophthora cambivora |
Bark necrosis of root collar. Sept. 13, 2002 |
| 1415117 |
Marssonina leaf spot |
Marssonina juglandis |
Leaf necrosis. July 26, 2002 |
| 1415080 |
leaf spot |
Mycosphaerella maculiformis |
Necrotic spots. July 11, 2002 |
| 1415115 |
Marssonina leaf spot |
Marssonina juglandis |
Nut necrosis. July 26, 2002 |
| 2251095 |
leaf blister of poplar |
Taphrina populina |
leaf blisters |
| 1415256 |
Ganoderma root and butt rot |
Ganoderma australe |
rot. |
| 1415232 |
Armillaria root rots |
Armillaria spp. |
Pseudosclerotic layers. Aug. 25, 2003 |
| 1415239 |
beech bark disease |
Nectria coccinea |
|
| 1427112 |
sudden oak death |
Phytophthora ramorum |
|
| 1442146 |
white heartwood rot |
Phellinus tremulae |
|
| 3046074 |
sycamore dieback |
|
bark removed to show stained cambial tissue compare to image 3046076 |
| 4213061 |
Eutypella canker |
Eutypella parasitica |
deformed stem |
| 1415077 |
chestnut blight or canker |
Cryphonectria parasitica |
Tree dieback. July 11, 2002 |
| 4822001 |
eucalyptus canker |
Cryphonectria cubensis |
canker |
| 4822088 |
Neonectria canker |
Neonectria galligena |
Distinctive "target-like" canker in stem |
| 1198007 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 1198012 |
oak tatters |
|
Severely deformed leaves are the characteristic symptom of this problem. Herbicide drift has been implicated as the cause of oak tatters. |
| 1198009 |
eye spot |
Phyllosticta minima |
This image shows spots that are more purple than usual. Often the center of the lesion falls out, resulting in the shot-hole symptom that is common with this disease. |
| 4213094 |
Dutch elm disease |
Ophiostoma ulmi |
close-up view of wilting leaves |
| 1457007 |
black ash decline |
|
Black ash decline symptoms, summer 2004, near Cloquest, MN |
| 1396143 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 1396144 |
Eutypella canker |
Eutypella parasitica |
Argonne Experimental Forest |
| 1396142 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 4214002 |
oak wilt |
Ceratocystis fagacearum |
center of dead/dying trees |
| 4213097 |
oak wilt |
Ceratocystis fagacearum |
leaf symptoms |
| 4213060 |
Eutypella canker |
Eutypella parasitica |
one-sided flare |
| 4213052 |
Phellinus heartrots |
Phellinus spp. |
|
| 4213065 |
Hypoxylon canker of aspen |
Entoleuca mammata |
older canker |
| 4213051 |
Cryptosphaeria cankers |
Cryptosphaeria spp. |
|
| 1371014 |
Phytophthora root and crown rot |
Phytophthora cambivora |
Tar spots, with bark removed. Lesse, Germany |
| 3046096 |
Septoria leaf spot and canker |
Septoria musiva |
stem cankers |
| 3226026 |
oak wilt |
Ceratocystis fagacearum |
veinal necrosis |
| 4822046 |
bacterial leaf scorch |
Xylella fastidiosa |
Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. Symptoms characteristically develop from bottom of the tree upward and inside of crown outward. Older leaves will have a "scorched" curled appearance while younger leaves at branch tips will appear healthy. |
| 3046099 |
Phomopsis cankers and twig blights |
Phomopsis spp. |
|
| 4215049 |
Cryptosphaeria cankers |
Cryptosphaeria spp. |
on aspen |
| 1427053 |
sudden oak death |
Phytophthora ramorum |
Tip symptoms on tanoak seedling, caused by P. ramorum. |
| 2252006 |
Dutch elm disease |
Ophiostoma ulmi |
sapwood stain |
| 3046098 |
Phomopsis cankers and twig blights |
Phomopsis spp. |
|
| 3047013 |
Armillaria root rots |
Armillaria spp. |
white fungal mat under bark |
| 3046063 |
Botryosphaeria canker |
Botryosphaeria rhodina |
|
| 1427113 |
sudden oak death |
Phytophthora ramorum |
|
| 1415212 |
Mycosphaerella leaf spot |
Mycosphaerella microsora |
Necrotic spots on leaves. July 8, 2003 |
| 1427101 |
sudden oak death |
Phytophthora ramorum |
|
| 4215065 |
oak wilt |
Ceratocystis fagacearum |
foliar symptoms on bur oak |
| 1427094 |
sudden oak death |
Phytophthora ramorum |
Coast live oak dying from P. ramorum infection. |
| 1427093 |
sudden oak death |
Phytophthora ramorum |
P. ramorum symptoms on Rhododendron in central CA. Leaves were confirmed as infected with P. ramorum by Jenny Davidson. |
| 1415157 |
Stigmina fungus |
Wilsonomyces carpophilus |
Necrotic spots. Sept. 13, 2002 |
| 4212085 |
oak anthracnose |
Apiognomonia errabunda |
leaf symptoms |
| 1400109 |
black rot |
Ceratocystis fimbriata |
Canker on high elevation aspen, Bristlecone Trail, Toiyabe National Forest. |
| 4213063 |
Hypoxylon canker of aspen |
Entoleuca mammata |
peeled canker margin |
| 3046097 |
Septoria leaf spot and canker |
Septoria musiva |
leaf spot |
| 5299099 |
American hawthorn rust |
Gymnosporangium globosum |
Lesions on leaf upper surface |
| 5046013 |
red oak borer |
Enaphalodes rufulus |
Attack on bole |
| 5061017 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
Canker on walnut caused by Fusarium sp. |
| 5061018 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
Cankiers on the bole of a young walnut, caused by Fusarium sp. |
| 5061019 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
Canker at base of a young walnut |
| 5061020 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
Canker on the bole of a young walnut |
| 4212084 |
oak anthracnose |
Apiognomonia errabunda |
leaf symptoms |
| 1442058 |
Dothichiza canker |
Dothichiza populea |
Dothichiza |
| 4212082 |
anthracnose |
Gnomonia spp. |
leaf symptoms |
| 1436137 |
mimosa wilt |
Fusarium oxysporum f.sp. perniciosum |
stem damage |
| 4213047 |
Cenangium cankers |
Cenangium spp. |
|
| 1234210 |
mimosa wilt |
Fusarium oxysporum f.sp. perniciosum |
|
| 4213004 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
|
| 1415184 |
Ciboria fungus |
Ciboria batschiana |
Acorn necrosis. June 20, 2003 |
| 0176059 |
fire blight |
Erwinia amylovora |
General view of a wild pear tree (Pyrus amygdaliformis) affected by fireblight (Erwinia amylovora). |
| 1427018 |
sudden oak death |
Phytophthora ramorum |
Big Sur, California |
| 1400118 |
hickory decline |
|
Bitternut hickory decline and mortality in Northeast Iowa. Cause was unidentified, but hickory bark beetle and/or Ceratocystis sp. were likely involved. |
| 1415112 |
tracheomycosis |
|
July 23, 2002 |
| 4212019 |
Venturia leaf scabs and blights |
Venturia spp. |
gall |
| 2251079 |
tar spot of maple |
Rhytisma acerinum |
early stage on maple leaves |
| 4213076 |
clinker polypore |
Inonotus obliquus |
with fungal wedge |
| 1436058 |
pecan scab |
Cladosporium caryigenum |
and pink mold |
| 1442059 |
Dothichiza canker |
Dothichiza populea |
Dothichiza |
| 3046095 |
rusts |
|
|
| 2251063 |
Melampsora rusts |
Melampsora spp. |
|
| 1415218 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Leaf necrosis on seedling. Sept. 21, 2003 |
| 1301041 |
Phomopsis cankers and twig blights |
Phomopsis spp. |
|
| 1400173 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 1442139 |
black rot |
Ceratocystis fimbriata |
|
| 1436142 |
tar spot of maple |
Rhytisma acerinum |
|
| 1415116 |
Marssonina leaf spot |
Marssonina juglandis |
Leaf necrosis. July 26, 2002 |
| 2251072 |
black rot |
Ceratocystis fimbriata |
tree windthrown at canker |
| 1427092 |
sudden oak death |
Phytophthora ramorum |
P. ramorum leaf symptoms on California laurel (bay). |
| 1399049 |
sapstreak disease of sugar maple |
Ceratocystis coerulescens |
characteristic stain on buttress root |
| 2251078 |
oak anthracnose |
Apiognomonia errabunda |
leaf symptoms |
| 1427017 |
sudden oak death |
Phytophthora ramorum |
Big Sur, California |
| 1415223 |
Pleuroceras fungus |
Pleuroceras pseudoplatani |
August 8, 2003 |
| 1371012 |
Phytophthora root and crown rot |
Phytophthora cambivora |
Story, Germany |
| 1427005 |
sudden oak death |
Phytophthora ramorum |
|
| 0656081 |
bacterial canker of poplar |
Xanthomonas populi |
Canker, girdling stem of a highly susceptible Populus tremula tree. |
| 4822045 |
bacterial leaf scorch |
Xylella fastidiosa |
Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. Symptoms characteristically develop from bottom of the tree upward and inside of crown outward. Older leaves will have a "scorched" curled appearance while younger leaves at branch tips will appear healthy. |
| 4212083 |
oak anthracnose |
Apiognomonia errabunda |
leaf symptoms |
| 1442140 |
black rot |
Ceratocystis fimbriata |
|
| 5054004 |
Hypoxylon canker of aspen |
Entoleuca mammata |
Canker caused by Entoleuca mammata on trembling aspen |
| 4213064 |
Hypoxylon canker of aspen |
Entoleuca mammata |
showing typical papery bark on older canker |
| 1427002 |
sudden oak death |
Phytophthora ramorum |
|
| 1406105 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 4825016 |
eucalyptus canker |
Cryphonectria cubensis |
Bark fissures on infected trunk. |
| 1427103 |
sudden oak death |
Phytophthora ramorum |
Tip droop symptom of sudden oak death on tanoak. |
| 1427086 |
sudden oak death |
Phytophthora ramorum |
Coast live oak dying from P. ramorum infection. |
| 1442143 |
Marssonina leaf spot |
Marssonina tremulae |
San Juan National Forest |
| 1427064 |
sudden oak death |
Phytophthora ramorum |
Coast live oak dying from P. ramorum infection. |
| 5435603 |
Avocado Dieback |
Neofusicoccum parvum |
|
| 5435604 |
powdery mildew |
Phyllactinia mali |
|
| 5435608 |
Japanese pear scab |
Venturia nashicola |
|
| 5435614 |
green alga |
Cephaleuros virescens |
|
| 5435626 |
gray mold |
Botrytis cinerea |
|
| 5435627 |
gray mold |
Botrytis cinerea |
|
| 1427074 |
sudden oak death |
Phytophthora ramorum |
Big Sur, California |
| 3226029 |
oak wilt |
Ceratocystis fagacearum |
leaf symptoms |
| 1570872 |
Nattrassia fungus |
Nattrassia mangiferae |
Sooty canker of mulberry (caused by Hendersonula toruloidea). November 1994 |
| 1457002 |
Eutypella canker |
Eutypella parasitica |
Large main stem canker on a northern Wisconsin sugar maple. |
| 1427090 |
sudden oak death |
Phytophthora ramorum |
Tanoak dying from P. ramorum infection, Muir Woods State Park, CA. |
| 2252001 |
Dutch elm disease |
Ophiostoma ulmi |
vascular discoloration in winged elm |
| 5021025 |
Elm yellows |
Phytoplasma N/A |
|
| 2139065 |
leaf blister of maple |
Taphrina sacchari |
|
| 1427045 |
sudden oak death |
Phytophthora ramorum |
Tip dieback symptoms caused by P. ramorum on tanoak. |
| 1198010 |
oak anthracnose |
Apiognomonia errabunda |
|
| 4214031 |
leaf scorches |
|
|
| 1442138 |
Hypoxylon canker of aspen |
Entoleuca mammata |
|
| 1427075 |
sudden oak death |
Phytophthora ramorum |
Tip blight symptoms on tanoak caused by P. ramorum. |
| 1427099 |
sudden oak death |
Phytophthora ramorum |
Tip blight symptoms of sudden oak death on tanoak. |
| 2666004 |
pecan scab |
Cladosporium caryigenum |
occurs on leaves, leaf petioles and nut shuck tissue forming small circular olivaceous to black spots pecan scab on nut shucks |
| 2139069 |
oak leaf blister |
Taphrina caerulescens |
|
| 2251098 |
Dutch elm disease |
Ophiostoma ulmi |
crown symptoms |
| 1400155 |
beech bark disease |
Nectria coccinea |
Cankered stem of beech following attack by beech scale and infection by Neonectria (beech bark disease complex) in Ontario. |
| 1238014 |
black knot |
Apiosporina morbosa |
|
| 2169014 |
tar spot of maple |
Rhytisma acerinum |
Salaj County, Central Romania (1 september, 2005) |
| 2252015 |
bacterial wetwood |
Enterobacter nimipressuralis |
canker on Siberian elm |
| 2252004 |
oak wilt |
Ceratocystis fagacearum |
leaf symptoms |
| 1371029 |
Inonotus canker |
Inonotus nidus-pici |
Holes in the trunk. Lucenec, Slovakia |
| 1415240 |
beech bark disease |
Nectria coccinea |
|
| 1415065 |
Marssonina leaf spot |
Marssonina salicicola |
Anthracnose on leaves. June 25, 2002 |
| 1436141 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 2252007 |
Dutch elm disease |
Ophiostoma ulmi |
branch dieback |
| 4554071 |
dothichiza canker of poplar |
Cryptodiaporthe populea |
|
| 1400143 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 4215061 |
oak wilt |
Ceratocystis fagacearum |
white oaks wilt over many years and may recover |
| 4822048 |
bacterial leaf scorch |
Xylella fastidiosa |
Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. Symptomatic tree with crown dieback, premature leaf abcission, chlorotic and "scorched" foliage. |
| 5021062 |
Elm yellows |
Phytoplasma N/A |
|
| 1399048 |
sapstreak disease of sugar maple |
Ceratocystis coerulescens |
typical fresh stain on buttress root |
| 4822049 |
bacterial leaf scorch |
Xylella fastidiosa |
Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. Leaves developing "scorched" appearance. |
| 1458008 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 4212088 |
Septoria leaf spot and canker |
Septoria musiva |
blotches on Balm-of-Gilead leaves |
| 1415005 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
August, 2001 |
| 4215063 |
oak wilt |
Ceratocystis fagacearum |
vascular discoloration in white oak |
| 1415085 |
leaf spot |
Mycosphaerella maculiformis |
Necrotic spots. July 11, 2002 |
| 0454026 |
chestnut blight or canker |
Cryphonectria parasitica |
Swelling and bark cracking on 13-year-old chestnut tree caused by Cryphonectria parasitica. |
| 5430499 |
European mistletoe |
Viscum album |
This local place with Viscum album is the northernmost natural infestation in Norway of European misteltoe, here on Black cottenwood at University of Life Sciences (UMB). Probably infested by birds around 1989. Mistletoe was the first species to be protected in Norway. This was done by Royal Decree January 13, 1956. The protection was revised in a new Royal Decree of October 29, 1976. |
| 5431874 |
European mistletoe |
Viscum album |
Black cottenwood at University of Life Sciences (UMB). 20 meters up a tree infestated with European misteltoe Viscum album. Probably infestion by birds around 1989. |
| 5431875 |
European mistletoe |
Viscum album |
Black cottenwood at University of Life Sciences (UMB). 20 meters up a tree infestated with European misteltoe Viscum album. Probably infestion by birds around 1989. |
| 5434810 |
bacterial wetwood |
Enterobacter nimipressuralis |
|
| 5434811 |
bacterial wetwood |
Enterobacter nimipressuralis |
|
| 5434809 |
bacterial wetwood |
Enterobacter nimipressuralis |
|
| 1415073 |
cherry leaf spot |
Blumeria jaapii |
Necrotic spots. July 9, 2002 |
| 1503067 |
Septoria leaf spot |
Septoria cornicola |
Shown affecting dogwood berries |
| 5424388 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaves of boxelder with marginal leaf scorch caused by the bacterium, Xylella fastidiosa. |
| 5424394 |
Dutch elm disease |
Ophiostoma ulmi |
Single, infected tree showing "flagging" symptom of individual branches dying back. |
| 5424396 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaves of common mulberry showing marginal leaf scorch with yellow border caused by the bacterium, Xylella fastidiosa. |
| 5424397 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaves of common mulberry showing marginal leaf scorch with dark brown and yellow banded border between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa. |
| 5424398 |
bacterial leaf scorch |
Xylella fastidiosa |
Single leaf of common mulberry showing marginal leaf scorch with dark brown and yellow banded border between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa. |
| 5424407 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaves of red maple showing marginal leaf scorch with diffuse yellow border between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa. |
| 5424408 |
bacterial leaf scorch |
Xylella fastidiosa |
Single leaf of red maple showing marginal leaf scorch with diffuse yellow border between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa. |
| 5424409 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaves of red maple showing marginal leaf scorch with distinct bands of discoloration between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa. |
| 5424411 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaf of a maple species showing marginal leaf scorch with broad, distinct bands of discoloration between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa. |
| 5424412 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaves of common mulberry with early symptoms of bacterial leaf scorch caused by the bacterium, Xylella fastidiosa. |
| 5424413 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaf of bur oak showing non-continuous band of colors caused by the bacterium, Xylella fastidiosa. |
| 5424414 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaves of English oak show distinct bands of discoloration between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa. |
| 5424415 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaf of pin oak showing distinct bands of discoloration between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa. |
| 5424416 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaf of pin oak showing mostly scorched tissue but for a small area near the base where there are distinct bands of discolored tissue caused by the bacterium, Xylella fastidiosa. |
| 5424417 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaves of pin oak showing varying degrees of scorched and banded tissue caused by the bacterium, Xylella fastidiosa. |
| 5424418 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaves of pin oak showing varying degrees of scorched and bands of colors caused by the bacterium, Xylella fastidiosa. |
| 5424419 |
bacterial leaf scorch |
Xylella fastidiosa |
Entire tree showing leaf scorch symptoms due to the bacterium, Xylella fastidiosa. |
| 5424420 |
bacterial leaf scorch |
Xylella fastidiosa |
Tree showing dieback due to the bacterium, Xylella fastidiosa. |
| 5424421 |
bacterial leaf scorch |
Xylella fastidiosa |
Red oak tree showing scorching of leaves on random branches caused by the bacterium, Xylella fastidiosa. |
| 5424422 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaves of red oak showing scorching and bands of colors caused by the bacterium, Xylella fastidiosa. |
| 5424423 |
bacterial leaf scorch |
Xylella fastidiosa |
2 leaves of scarlet oak with distinct bands of discoloration between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa. |
| 5424424 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaf of scarlet oak with some banding of colors between scorched and symptomless tissue but barely any yellow band. |
| 5424425 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaves of shingle oak with distinct bands of discoloration between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa. |
| 5424452 |
bacterial leaf scorch |
Xylella fastidiosa |
Single leaf of sweetgum showing distinct bands of discoloration between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa. |
| 5424453 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaves of sycamore with scorch symptoms caused by the bacterium, Xylella fastidiosa. banding of color is not nearly as distinct as with other tree types. |
| 5424410 |
sugar maple |
Acer saccharum |
Leaves of silver maple showing marginal leaf scorch with distinct bands of discoloration between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa. |
| 1398064 |
Eutypella canker |
Eutypella parasitica |
Classic "cobra head" shaped stem |
| 4912014 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 5434309 |
walnut anthracnose |
Gnomonia leptostyla |
|
| 5434310 |
walnut anthracnose |
Gnomonia leptostyla |
Walnut Anthracnose |
| 5434311 |
walnut anthracnose |
Gnomonia leptostyla |
Walnut Anthracnose |
| 3046084 |
leaf blister of poplar |
Taphrina populina |
|
| 4449057 |
Nectria canker |
Nectria spp. |
|
| 5021042 |
Elm yellows |
Phytoplasma N/A |
|
| 1398052 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 1396140 |
Dutch elm disease |
Ophiostoma ulmi |
Wildcat Mountain Park |
| 1198006 |
oak leaf blister |
Taphrina caerulescens |
|
| 3046083 |
leaf blister of poplar |
Taphrina populina |
|
| 4213067 |
Hypoxylon canker of aspen |
Entoleuca mammata |
broken tree often associated with canker |
| 4449033 |
leaf blister of birch |
Taphrina betulina |
|
| 4213048 |
Cenangium cankers |
Cenangium spp. |
view of infected trees |
| 5254093 |
canker |
|
Bleeding canker on landscape oak. Cause unknown. |
| 5047024 |
decay |
|
Severe decay in a willow. |
| 5047034 |
basal wound |
|
An ash with an open wound and decay at the ground line |
| 5062045 |
yellow birch decline |
|
Decline symptoms in yellow birch |
| 1301020 |
oak wilt |
Ceratocystis fagacearum |
Vertical cracks in bark caused by pressure pads. |
| 4554043 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 1415019 |
Dothichiza canker |
Dothichiza populea |
Canker. May 2, 2002 |
| 0541079 |
wood decay |
Schizophyllum commune |
|
| 4213066 |
Hypoxylon canker of aspen |
Entoleuca mammata |
older canker |
| 1427039 |
sudden oak death |
Phytophthora ramorum |
|
| 0541045 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 0541046 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 0541047 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 3037015 |
oak wilt |
Ceratocystis fagacearum |
southern Missouri |
| 5021033 |
Elm yellows |
Phytoplasma N/A |
|
| 5021024 |
Elm yellows |
Phytoplasma N/A |
|
| 0454001 |
bacterial canker of poplar |
Xanthomonas populi |
Leaf scar canker caused by Xanthomonas populi on young stem of poplar. |
| 0534060 |
tar spot of maple |
Rhytisma acerinum |
|
| 0534059 |
tar spot of maple |
Rhytisma acerinum |
|
| 0534072 |
clinker polypore |
Inonotus obliquus |
|
| 0534061 |
hispidus canker |
Inonotus hispidus |
|
| 0534052 |
birch rust |
Melampsoridium betulinum |
uredia on birch leaves |
| 4214003 |
oak wilt |
Ceratocystis fagacearum |
infection center |
| 0534044 |
birch conk |
Piptoporus betulinus |
|
| 5021038 |
Elm yellows |
Phytoplasma N/A |
|
| 0590012 |
sycamore anthracnose |
Apiognomonia veneta |
leaf blight |
| 3046080 |
sycamore anthracnose |
Apiognomonia veneta |
premature leaf drop |
| 5021083 |
Elm yellows |
Phytoplasma N/A |
|
| 5021023 |
Elm yellows |
Phytoplasma N/A |
|
| 1406109 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 4213058 |
Eutypella canker |
Eutypella parasitica |
|
| 1238002 |
bacterial leaf scorch |
Xylella fastidiosa |
|
| 1198005 |
oak leaf blister |
Taphrina caerulescens |
|
| 5254040 |
oak wilt |
Ceratocystis fagacearum |
Individual leaf symptoms |
| 5035095 |
sudden oak death |
Phytophthora ramorum |
Tanoak dying from Phytophthora ramorum infection |
| 4215060 |
oak wilt |
Ceratocystis fagacearum |
rapidly wilting red oak |
| 2169015 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 1415006 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
August, 2001 |
| 1399076 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 1415004 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
August, 2001 |
| 1399075 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 2252003 |
oak wilt |
Ceratocystis fagacearum |
infected sapling |
| 1400152 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 4213050 |
black rot |
Ceratocystis fimbriata |
|
| 4213049 |
black rot |
Ceratocystis fimbriata |
|
| 4822047 |
bacterial leaf scorch |
Xylella fastidiosa |
Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. Symptoms characteristically develop from bottom of the tree upward and inside of crown outward. Older leaves will have a "scorched" curled appearance while younger leaves at branch tips will appear healthy. |
| 2251077 |
oak anthracnose |
Apiognomonia errabunda |
leaf symptoms |
| 3046073 |
bacterial leaf scorch |
Xylella fastidiosa |
|
| 1442137 |
Hypoxylon canker of aspen |
Entoleuca mammata |
Carson National Forest |
| 2111027 |
powdery mildew |
Phyllactinia guttata |
symptoms on foliage |
| 4213098 |
oak wilt |
Ceratocystis fagacearum |
leaf symptoms |
| 5021029 |
Elm yellows |
Phytoplasma N/A |
dieback |
| 5021036 |
Elm yellows |
Phytoplasma N/A |
|
| 2251066 |
white heartwood rot |
Phellinus tremulae |
sections through decayed stem |
| 5021034 |
Elm yellows |
Phytoplasma N/A |
|
| 5021039 |
Elm yellows |
Phytoplasma N/A |
|
| 4822037 |
Inonotus heartrot |
Inonotus rickii |
Sap exudation and associated bark staining at infected branch stub. |
| 2252017 |
Irpex canker |
Spongipellis pachyodon |
|
| 4822038 |
Inonotus heartrot |
Inonotus rickii |
decay column in bole |
| 5021043 |
Elm yellows |
Phytoplasma N/A |
|
| 5021037 |
Elm yellows |
Phytoplasma N/A |
|
| 4213077 |
clinker polypore |
Inonotus obliquus |
infected stem with bowling pin shape |
| 2139067 |
Marssonina leaf spot |
Marssonina tiliae |
|
| 3046079 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 3227027 |
Dutch elm disease |
Ophiostoma ulmi |
in winged elm |
| 1406125 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406117 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1400106 |
Hypoxylon cankers |
Hypoxylon spp. |
(on broken stem), |
| 1400104 |
Nectria canker |
Nectria spp. |
"target canker" on aspen, Nicolet National Forest, Wisconsin. |
| 1247133 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
|
| 4822080 |
Phytophthora basal canker |
Phytophthora palmivora |
Distinctive coffee-brown or dark rusty reddish-brown to black discoloration of bark. |
| 3046094 |
rusts |
|
|
| 4822079 |
Phytophthora basal canker |
Phytophthora palmivora |
zone line between infected vs. uninfected bark |
| 0590001 |
crown gall |
Rhizobium radiobacter |
of euonymus |
| 1398053 |
Dutch elm disease |
Ophiostoma ulmi |
Advanced crown symptoms. |
| 1436136 |
mimosa wilt |
Fusarium oxysporum f.sp. perniciosum |
|
| 0488094 |
Fusarium damping-off |
Fusarium solani |
canker on yellow-poplar with typical bleeding |
| 1398250 |
Taphrina flower fungus |
Taphrina johansonii |
Infected catkins |
| 1415075 |
chestnut blight or canker |
Cryphonectria parasitica |
Tree dieback. July 11, 2002 |
| 1415183 |
Ciboria fungus |
Ciboria batschiana |
Acorn necrosis. June 20, 2003 |
| 1224007 |
pecan scab |
Cladosporium caryigenum |
|
| 1427072 |
sudden oak death |
Phytophthora ramorum |
Coast live oak infected with P. ramorum. |
| 0886032 |
ozone |
|
to Black Cherry leaf |
| 1399127 |
crown gall |
Rhizobium radiobacter |
Poor pruning resulting in spread of crown gall |
| 1388032 |
Dutch elm disease |
Ophiostoma ulmi |
Flagging branches throughout the crown. |
| 0454004 |
fire blight |
Erwinia amylovora |
Erwinia amylovora (fireblight) symptoms on Pyrus salicifolia |
| 1223157 |
pecan scab |
Cladosporium caryigenum |
|
| 1427105 |
sudden oak death |
Phytophthora ramorum |
Symptom progression on coast live oaks, from wilting to dead. |
| 0364011 |
Septoria leaf spot and cankers |
Septoria spp. |
leaf spots on cottonwood |
| 0454005 |
fire blight |
Erwinia amylovora |
Erwinia amylovora (fireblight) symptoms on Cotoneaster salicifolius floccosus. |
| 1399117 |
Cytospora canker |
Valsa sordida |
Excised canker at base of tree, callous formation. |
| 1415074 |
cherry leaf spot |
Blumeria jaapii |
Necrotic spots. July 9, 2002 |
| 1396148 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 1400153 |
Dutch elm disease |
Ophiostoma ulmi |
Dying elm, marked for removal. July |
| 1399059 |
Eutypella canker |
Eutypella parasitica |
|
| 1398074 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 0454002 |
chestnut blight or canker |
Cryphonectria parasitica |
Sunken area on bark of a young chestnut tree resulting from infection by Cryphonectria parasitica. Note adventitious shoots arising below the dead patch. |
| 0364009 |
oak anthracnose |
Apiognomonia errabunda |
leaf symptoms |
| 1224024 |
pecan scab |
Cladosporium caryigenum |
|
| 1399060 |
Eutypella canker |
Eutypella parasitica |
break at canker |
| 2251064 |
shepherd's crook leaf and shoot blight |
Venturia populina |
|
| 1400171 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 1396139 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 0454006 |
fire blight |
Erwinia amylovora |
Erwinia amylovora (fireblight) symptoms on Cotoneaster watereri. |
| 4449026 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 1396136 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 4213062 |
Hypoxylon canker of aspen |
Entoleuca mammata |
showing typical color of canker |
| 4213095 |
Dutch elm disease |
Ophiostoma ulmi |
old infection center |
| 1301073 |
Dutch elm disease |
Ophiostoma ulmi |
Early wilt symptoms |
| 4212086 |
tar spot of maple |
Rhytisma acerinum |
early stage on leaves |
| 1406121 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406252 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 3226030 |
oak wilt |
Ceratocystis fagacearum |
early symptoms on foliage |
| 1415002 |
oak decline |
|
May, 2001 |
| 1241506 |
Elytroderma needle cast of pine |
Elytroderma deformans |
Witches brooms form in systemically infected branches. |
| 2117025 |
bacterial leaf scorch |
Xylella fastidiosa |
on cultivar Cape Fear pecan trees |
| 1415143 |
gray mold |
Botrytis cinerea |
Seedling dieback in pots. Aug. 26, 2002 |
| 1415082 |
chestnut blight or canker |
Cryphonectria parasitica |
July 11, 2002 |
| 2117024 |
bacterial leaf scorch |
Xylella fastidiosa |
on cultivar Cape Fear pecan trees |
| 2117027 |
bacterial leaf scorch |
Xylella fastidiosa |
on cultivar Cape Fear pecan trees |
| 2117023 |
bacterial leaf scorch |
Xylella fastidiosa |
on cultivar Cape Fear pecan trees |
| 2117028 |
bacterial leaf scorch |
Xylella fastidiosa |
on cultivar Cape Fear pecan trees |
| 2117029 |
bacterial leaf scorch |
Xylella fastidiosa |
on cultivar Cape Fear pecan trees |
| 1198013 |
oak tatters |
|
Characteristic shredded appearance of bur oak leaves formed early in the season. |
| 2251015 |
Atropellis canker |
Atropellis piniphila |
stained wood with bark removed |
| 1277108 |
Phytophthora disease of alders |
Phytophthora alni |
|
| 1277121 |
bacterial canker of poplar |
Xanthomonas populi |
Infected trees in northern France |
| 1277123 |
bacterial canker of poplar |
Xanthomonas populi |
Artifically inoculated stem. |
| 1415011 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
On seedlings, April 18, 2002 |
| 4212089 |
Septoria leaf spot and canker |
Septoria musiva |
defoliation of Balm-of-Gilead trees |
| 2117031 |
bacterial leaf scorch |
Xylella fastidiosa |
on cultivar Cape Fear pecan trees |
| 1406130 |
beech bark disease |
Nectria coccinea |
|
| 2117026 |
bacterial leaf scorch |
Xylella fastidiosa |
on cultivar Cape Fear pecan trees |
| 1399067 |
iron deficiency |
|
iron deficiency |
| 1427006 |
sudden oak death |
Phytophthora ramorum |
|
| 1406110 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 2117030 |
bacterial leaf scorch |
Xylella fastidiosa |
on cultivar Cape Fear pecan trees |
| 1406127 |
beech bark disease |
Nectria coccinea |
|
| 2117022 |
bacterial leaf scorch |
Xylella fastidiosa |
on cultivar Cape Fear pecan trees |
| 2110005 |
Phytophthora disease of alders |
Phytophthora alni |
Mature, riparian common alder (A. glutinosa) stand heavily impacted by root and collar rot caused by P. alni; surviving healthy alder in the center may indicate occurrence of resistance. |
| 2110006 |
Phytophthora disease of alders |
Phytophthora alni |
Mature, riparian common alder (A. glutinosa) stand with high impact of Phytophthora root and collar rot. |
| 2110007 |
Phytophthora disease of alders |
Phytophthora alni |
Alder plantation on former agricultural land; note infected grey alder (A. incana) with sparse, chlorotic and small-sized foliage. |
| 2110012 |
Phytophthora disease of alders |
Phytophthora alni |
Root system of a 2-year-old nursery grown common alder (A. glutinosa) with necrotic lesions caused by P. alni. |
| 2110009 |
Phytophthora disease of alders |
Phytophthora alni |
Common alder (A. glutinosa) in a non-flooded forest plantation with root and collar rot caused by P. alni. |
| 2110010 |
Phytophthora disease of alders |
Phytophthora alni |
Mature common alder (A. glutinosa) with collar rot by P. alni (note tarry spots at the outer bark) growing in a forest stand; introduction of the pathogen via alder plantation in the neighbourhood established with infested planting stock. |
| 2110011 |
Phytophthora disease of alders |
Phytophthora alni |
2-yr-old sprouts of of an 8-yr-old coppiced Alnus glutinosa showing wilting due to root and collar rot caused by P. alni. |
| 1396138 |
Dutch elm disease |
Ophiostoma ulmi |
Wildcat Mountain Park |
| 0454017 |
Dutch elm disease |
Ophiostoma ulmi |
Cross section of an Ophiostoma ulmi-infected elm branch, showing characteristic dark spots in the wood. |
| 1223006 |
white muscadine disease |
Beauveria bassiana |
diseased larvae |
| 2110008 |
Phytophthora disease of alders |
Phytophthora alni |
Grey alder (A. incana) with collar rot caused by P. alni; note the typical tarry spots at the outer bark and the tongue-shaped orange-brown necrosis of the inner bark. |
| 2110001 |
Phytophthora disease of alders |
Phytophthora alni |
Mature common alder with collar rot caused by P. alni showing sparse, chlorotic and small-sized foliage. |
| 0364046 |
Cylindrocladium root diseases |
Cylindrocladium spp. |
diseased root |
| 1400116 |
basal cankers |
|
Swollen butt and woodpecker damage. At the time this photo was taken, this tree had no signs of chestnut blight. The swollen butt and woodpecker damage seemed to be unrelated to chestnut blight. The tree has since succombed to the disease. |
| 1377020 |
Eutypella canker |
Eutypella parasitica |
Often called "cobra-head canker" because of the characteristic appearance of larger cankers. The trunk often snaps off just above the canker. |
| 1371015 |
Phytophthora root and crown rot |
Phytophthora cambivora |
Uniform yellowing of young tree due to root damage. Story, Germany |
| 1396147 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 1371013 |
Phytophthora root and crown rot |
Phytophthora cambivora |
Tar spots. Lesse, Germany |
| 1476095 |
birch leafminer |
Fenusa pusilla |
leaf mines |
| 5021074 |
Phytophthora root rot |
Phytophthora cactorum |
dieback |
| 1415076 |
chestnut blight or canker |
Cryphonectria parasitica |
Tree dieback. July 11, 2002 |
| 5406048 |
Thousand Cankers Disease |
Geosmithia morbida |
Black walnuts in the end stage of thousand cankers. Photograph taken August 5, 2009. Associated with walnut twig beetle. |
| 5035094 |
sudden oak death |
Phytophthora ramorum |
Tanoak dying from Phytophthora ramorum infection |
| 5300088 |
oak wilt |
Ceratocystis fagacearum |
A small oak wilt pocket |
| 5041040 |
sudden oak death |
Phytophthora ramorum |
Symptoms on coast live oak |
| 5041042 |
sudden oak death |
Phytophthora ramorum |
Symptoms on coast live oak |
| 5058096 |
sudden oak death |
Phytophthora ramorum |
Symptoms on Pacific madrone |
| 5046052 |
sudden oak death |
Phytophthora ramorum |
Dark discoloration of inner bark |
| 5046056 |
sudden oak death |
Phytophthora ramorum |
Crown symptoms |
| 5046063 |
sudden oak death |
Phytophthora ramorum |
Twig dieback |
| 5046068 |
sudden oak death |
Phytophthora ramorum |
Twig symptoms |
| 5059009 |
Strumella canker |
Urnula craterium |
Strumella canker on oak |
| 5059010 |
Strumella canker |
Urnula craterium |
Strumella canker on oak |
| 5059011 |
Strumella canker |
Urnula craterium |
Strumella canker on oak |
| 5059012 |
Strumella canker |
Urnula craterium |
Strumella canker on oak |
| 5059013 |
Strumella canker |
Urnula craterium |
Strumella canker on oak |
| 5046055 |
sudden oak death |
Phytophthora ramorum |
Leaf symptoms |
| 5418685 |
stem girdling roots |
|
|
| 5424245 |
Eriophyid mites |
Eriophyes spp. |
Felt-like leaf gall on river birch caused by an eriophyid mite in the genus Eriophyes. |
| 5369899 |
cat-faced spider |
Araneus gemmoides |
Excrement |
| 5369913 |
fall webworm |
Hyphantria cunea |
Extensive infestation with webbing covering trunk |
| 5389335 |
leaf blister of birch |
Taphrina betulina |
Leaf blister of birch |
| 5389333 |
leaf blister of birch |
Taphrina betulina |
Leaf blister of birch |
| 5389334 |
downy birch |
Betula pubescens |
Leaf blister of birch |
| 5389330 |
leaf blister of birch |
Taphrina betulina |
Leaf blister of birch |
| 5389331 |
leaf blister of birch |
Taphrina betulina |
Leaf blister of birch |
| 5389332 |
leaf blister of birch |
Taphrina betulina |
Leaf blister of birch |
| 5045047 |
sudden oak death |
Phytophthora ramorum |
Severe impact of Phytophthora ramorum on Pacific madrone |
| 1570873 |
Nattrassia fungus |
Nattrassia mangiferae |
Sooty canker of mulberry (caused by Hendersonula toruloidea). November 1994 |
| 5253075 |
ash root rot |
Scytinostroma galactinum |
Mycelial wefts of Scytinostroma galactinum on windthrown white ash |
| 5046016 |
oak wilt |
Ceratocystis fagacearum |
Leaf symptoms on red oak |
| 5040068 |
oak wilt |
Ceratocystis fagacearum |
Red oak with oak wilt, shedding leaves and marked for removal |
| 1546239 |
Eriophyid mite |
|
Euriophyid caused gall on elm |
| 2199086 |
laurel wilt |
Raffaelea lauricola |
Vascular staining caused by a fungus introduced by Xyleborus glabratus. Note beetle attack site to left of fingernail. |
| 2199087 |
laurel wilt |
Raffaelea lauricola |
Vascular staining caused by an Raffaelea sp. fungus introduced by Xyleborus glabratus |
| 2110024 |
laurel wilt |
Raffaelea lauricola |
Widespread mortality of red bay in the coastal region of Georgia has been caused by Xyleborus glabratus and the associated Raffaelea spp fungus. Photo taken in Liberty County, Georgia. |
| 5403535 |
brown root rot |
Phellinus noxius |
|
| 5405252 |
anthracnose |
Aureobasidium apocryptum |
Upper surface of maple leaf with tan blotches having dark-green halos caused by the fungus Aureobasidium apocryptum. |
| 5405253 |
anthracnose |
Aureobasidium apocryptum |
Upper surface of maple leaf with tan blotches having dark-green halos caused by the fungus Aureobasidium apocryptum. |
| 5405254 |
anthracnose |
Aureobasidium apocryptum |
Close-up of upper surface of maple leaf with tan blotches having dark-green halos caused by the fungus Aureobasidium apocryptum. |
| 5405255 |
anthracnose |
Aureobasidium apocryptum |
Close-up of lower surface of maple leaf with tan blotches having dark-green halos caused by the fungus Aureobasidium apocryptum. |
| 5405256 |
anthracnose |
Aureobasidium apocryptum |
Close-up of lower surface of maple leaf showing one tan blotchy area having a dark-green halo caused by the fungus Aureobasidium apocryptum. |
| 5405257 |
anthracnose |
Aureobasidium apocryptum |
Close-up of lower surface of maple leaf showing tan infected tissue caused by the fungus Aureobasidium apocryptum. Note the lack of any signs of the pathogen. |
| 5405285 |
anthracnose |
Discula spp. |
Upper surface of several leaves with large tan-brown blotchy areas starting between the major veins but eventually coalescing to blight large areas of the leaves believed to be caused by a species of Discula. |
| 5405286 |
anthracnose |
Discula spp. |
Upper surface of several leaves with large tan-brown blotchy areas starting between the major veins but eventually coalescing to blight large areas of the leaves believed to be caused by a species of Discula. |
| 5405287 |
anthracnose |
Discula spp. |
Upper surface of a single leaf with large tan-brown blotchy areas starting between the major veins but eventually coalescing to blight large areas of the leaves believed to be caused by a species of Discula. |
| 5405288 |
anthracnose |
Discula spp. |
Close-up of the upper surface of a leaf with large tan-brown blotchy area believed to be caused by a species of Discula. |
| 5405289 |
anthracnose |
Discula spp. |
Close-up of the upper surface of a leaf with large tan-brown blotchy area believed to be caused by a species of Discula. |
| 5405290 |
anthracnose |
Discula spp. |
Close-up of the lower surface of a blighted area of a leaf believed to be caused by a species of Discula. |
| 5405299 |
downy mildew |
Plasmopara cercidis |
Angular tan to brown blocks of infected tissue mostly along the veins on the upper leaf surface caused by the fungus Plasmopara cercidis. The eight or more larger brown spots that are less angular and surrounded by a yellow halo are infections of Pseudocercospora vitis the cause of Pseudocercospora leaf blight.
|
| 5405300 |
downy mildew |
Plasmopara cercidis |
Angular white to brown blocks of infected tissue mostly along the veins on the lower leaf surface caused by the fungus Plasmopara cercidis. The eight or more larger brown spots that are less angular and surrounded by a yellow halo are infections of Pseudocercospora vitis the cause of Pseudocercospora leaf blight. |
| 5405340 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Several leaves with large, brown blotches with yellow halos on the upper leaf surface caused by the fungus Pseudocercospora vitis. Also on the leaves are angular tan to brown blocks of infected tissue mostly along the veins caused by the fungus Plasmopara cercidis. |
| 5405341 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Several leaves with large, brown blotches with yellow halos on the lower leaf surface caused by the fungus Pseudocercospora vitis. Also on the leaves are angular tan to brown blocks of infected tissue mostly along the veins caused by the fungus Plasmopara cercidis. |
| 5405342 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
A single leaf with large, brown blotches with yellow halos on the upper leaf surface caused by the fungus Pseudocercospora vitis. Also on the leaves are angular tan to brown blocks of infected tissue mostly along the veins caused by the fungus Plasmopara cercidis. |
| 5405343 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
A single leaf with large, brown blotches with yellow halos on the lower leaf surface caused by the fungus Pseudocercospora vitis. Also on the leaves are white to gray-brown blocks of infected tissue mostly along the veins caused by the fungus Plasmopara |
| 5405344 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Close-up of a large, brown blotch on the upper leaf surface caused by the fungus Pseudocercospora vitis. |
| 5405363 |
leaf spot |
Tubakia dryina |
Upper surface of red oak leaves with spots infected with the fungus Tubakia dryina. |
| 5405364 |
leaf spot |
Tubakia dryina |
Lower surface of red oak leaves with spots infected with the fungus Tubakia dryina. |
| 5405365 |
leaf spot |
Tubakia dryina |
Close up of upper surface of red oak leaves with spots infected with the fungus Tubakia dryina. |
| 5406086 |
Thousand Cankers Disease |
Geosmithia morbida |
Crown thinning symptoms with thousand cankers in advanced stage infestation. Associated with walnut twig beetle. |
| 5406096 |
Thousand Cankers Disease |
Geosmithia morbida |
Canker development around walnut twig beetle gallery in English walnut. |
| 5406094 |
Thousand Cankers Disease |
Geosmithia morbida |
Canker development around walnut twig beetle gallery in English walnut. |
| 5406090 |
Thousand Cankers Disease |
Geosmithia morbida |
Walnut twig beetle galleries and cankers in trunk of hybrid walnut. Associated with walnut twig beetle. |
| 5406091 |
Thousand Cankers Disease |
Geosmithia morbida |
Walnut twig galleries and cankers in branch of hybrid walnut. Associated with walnut twig beetle. |
| 5406088 |
Thousand Cankers Disease |
Geosmithia morbida |
Branch cankers that have developed around twig beetle galleries. Geosmithia can be seen fruiting in the center gallery. Associated with the walnut twig beetle. |
| 5406089 |
Thousand Cankers Disease |
Geosmithia morbida |
branch cankers that have developed around twig beetle galleries. Associated with the walnut twig beetle. |
| 5406087 |
walnut twig beetle |
Pityophthorus juglandis |
Branch cankers that have developed around twig beetle galleries. Associated with Thousand cankers disease. |
| 5406085 |
Thousand Cankers Disease |
Geosmithia morbida |
Second in series of two. Black walnuts are showing advanced symptoms of thousand cankers disease in this picture taken September 18, 2009. tree died the following June. Associated with walnut twig beetle. |
| 5253100 |
oak decline |
|
Oak dieback and mortality caused by drought, twolined chestnut borer and Armillaria root rot. |
| 5254001 |
oak decline |
|
Oak decline caused by drought, twolined chestnut borer and Armillaria root rot. |
| 5045085 |
Ohia decline |
|
Ohia decline on Hawaii |
| 5045086 |
oak decline |
|
Oak killed by drought, twolined chestnut borer, and Armillaria root rot. |
| 5045087 |
oak decline |
|
Oak tree mortality caused by drought, twolined chestnut borer and Armillaria root rot. |
| 5045088 |
Ohia decline |
|
|
| 5053097 |
chestnut blight or canker |
Cryphonectria parasitica |
Chestnut blight canker on American chestnut |
| 5039008 |
burl and decay |
|
A large burl in American elm |
| 5055075 |
eye spot |
Phyllosticta minima |
Phyllosticta leaf spot |
| 5253012 |
Phytophthora root rot |
Phytophthora cinnamomi |
Bleeding canker caused by Phytophthora cinnamomi, Arrayanal, Mexico |
| 5253013 |
Phytophthora root rot |
Phytophthora cinnamomi |
Bleeding canker caused by Phytophthora cinnamomi, Arrayanal, Mexico |
| 5253014 |
Phytophthora root rot |
Phytophthora cinnamomi |
Bleeding canker caused by Phytophthora cinnamomi, Arrayanal, Mexico |
| 5253015 |
Phytophthora root rot |
Phytophthora cinnamomi |
Bleeding canker caused by Phytophthora cinnamomi, Arrayanal, Mexico |
| 5253016 |
Phytophthora root rot |
Phytophthora cinnamomi |
Zone lines around canker cause by Phytophthora cinnamomi |
| 5253099 |
Phytophthora root and crown rots |
Phytophthora spp. |
Bleeding canker on oak |
| 5056061 |
oak leaf blister |
Taphrina caerulescens |
Leaf blisters |
| 5056062 |
oak leaf blister |
Taphrina caerulescens |
Leaf blisters |
| 5056063 |
oak leaf blister |
Taphrina caerulescens |
Leaf blisters |
| 5035030 |
oak wilt |
Ceratocystis fagacearum |
Red oak mortality caused by oak wilt |
| 5035032 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt mortality caused by oak wilt. |
| 5039072 |
oak wilt |
Ceratocystis fagacearum |
Oak mortality caused by oak wilt. |
| 5039082 |
oak wilt |
Ceratocystis fagacearum |
Small oak tree killed by oak wilt |
| 5039086 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt mortality and symptoms |
| 5035035 |
sudden oak death |
Phytophthora ramorum |
Leaf symptoms of ramorum leaf blight on California bay laurel |
| 5035036 |
sudden oak death |
Phytophthora ramorum |
Phytophthora ramorum leaf symptoms on California bay laurel |
| 5035039 |
sudden oak death |
Phytophthora ramorum |
Mortality in tanoak caused by Phytophthora ramorum |
| 1436143 |
lichen |
Strigula smaragdula |
|
| 5406084 |
walnut twig beetle |
Pityophthorus juglandis |
Exit wounds made by adults and larval tunneling in a branch. |
| 5406056 |
walnut twig beetle |
Pityophthorus juglandis |
Branch with dieback associated with infestation of walnut twig beetle in Arizona walnut. Associated with Thousand cankers disease. |
| 5406062 |
walnut twig beetle |
Pityophthorus juglandis |
Entry wounds made in trunk. A small amount of weeping can sometimes be observed when beetles enter trunks. |
| 5406073 |
walnut twig beetle |
Pityophthorus juglandis |
Exit wounds made by adults. |
| 5406055 |
walnut twig beetle |
Pityophthorus juglandis |
Twig dieback associated with infestation of walnut twig beetle in Arizona walnut. Associated with Thousand cankers disease. |
| 5406044 |
Thousand Cankers Disease |
Geosmithia morbida |
Black walnut in end stage of thouand cankers. Photograph taken June 25, 2009; tree was removed one week later. During previos September symptoms were flaggong on a single branch. Associated with walnut twig beetle. |
| 5406083 |
Thousand Cankers Disease |
Geosmithia morbida |
First in a series of two. Black walnuts that have recently died from thousand cankers disease. Photgraph taken June 11, 2009. Dieback was noted in September 18, 2008. |
| 5406068 |
Thousand Cankers Disease |
Geosmithia morbida |
Black walnut recently killed by thousand cankers disease. Associated with walnut twig beetle. |
| 5406069 |
Thousand Cankers Disease |
Geosmithia morbida |
Black walnuts recently killed by thousand cankers. Symptoms were first noted two years prior and trees recieved multiple applications of soil-applied imidacloprid.associated with walnut twig beetle. |
| 5406067 |
Thousand Cankers Disease |
Geosmithia morbida |
Crown thinning and dieback associated with end stage thousand cankers disease. Asociated with walnut twig beetle. |
| 5406054 |
Thousand Cankers Disease |
Geosmithia morbida |
Twig dieback associated with infestation of walnut twig beetle in Arizonia walnut.Associated with walnut twig beetle. |
| 5406066 |
Thousand Cankers Disease |
Geosmithia morbida |
Large trunk cankers commomn in end stage infestations of thousand cankers. Several fungio, including Fusarium solani, can be cultured from these cankers. |
| 5406049 |
Thousand Cankers Disease |
Geosmithia morbida |
Black walnut recently killed by thousand cankers. A healthy pecan is in the background. Associated with walnutt wig beetle. |
| 5406050 |
Thousand Cankers Disease |
Geosmithia morbida |
Black walnut recently killed by thousand cankers. A healthy pecan is in background. Assocaited with walnut twig beetle. |
| 5406052 |
Thousand Cankers Disease |
Geosmithia morbida |
Black walnut with advanced symptons of cankers. Associated with walnut twig beetle. |
| 5406053 |
Thousand Cankers Disease |
Geosmithia morbida |
Black walnuts recently killed by thousand cankers. trees first showed symptoms two years earlier and had recieved two applications of imidacloprid in attempt to control disease progression. Associated with walnut twig beetle. |
| 5406045 |
Thousand Cankers Disease |
Geosmithia morbida |
Black walnut in end stage of thousand cankers. Photograph June 25, 2009; tree was removed one week later. Associatd with walnut twig beetle. |
| 5406046 |
Thousand Cankers Disease |
Geosmithia morbida |
Black walnut showing first external symptom of thousand cankers. A single flagging branch can be seen in the crown area on the upper right of the photograph. Associated with walnut twig beetle. |
| 5406047 |
Thousand Cankers Disease |
Geosmithia morbida |
Black walnut showing early stage external symptoms of thousand cankers. A few branches in the crown are showing flagging and there is crown thinning. Associatd with walnut twig beetle. |
| 5051090 |
Eutypella canker |
Eutypella parasitica |
|
| 5298092 |
decay |
|
|
| 5050081 |
decay |
|
Decay column in red maple. |
| 5044023 |
sudden oak death |
Phytophthora ramorum |
Tanoak sprouts killed by Phytophthora ramorum. |
| 5044026 |
sudden oak death |
Phytophthora ramorum |
Coast live oak killed by P. ramorum. |
| 5044027 |
sudden oak death |
Phytophthora ramorum |
Tan oak killed by P. ramorum. |
| 5044028 |
sudden oak death |
Phytophthora ramorum |
young tanoak killed by P. ramorum. |
| 5044029 |
sudden oak death |
Phytophthora ramorum |
Tanoak killed by P. ramorum. |
| 5044030 |
sudden oak death |
Phytophthora ramorum |
Tanoak sprouts killed by P. ramorum. |
| 5051092 |
Eutypella canker |
Eutypella parasitica |
Eutypella canker on small tree |
| 5038074 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt crown symptoms. |
| 2110087 |
powdery mildew |
Phyllactinia guttata |
symptoms on foliage |
| 5298073 |
decay |
|
Discoloration and decay in wood pile after storm damage. |
| 5048088 |
beech bark disease |
Nectria coccinea |
Beech snap, in a stand affected with beech bark disease. Beech snap is common in stands affected by beech bark disease. |
| 2174083 |
anthracnose |
Colletotrichum spp. |
|
| 5251062 |
canker |
|
Bleeding on oak, unknown cause. |
| 5048006 |
ash root rot |
Scytinostroma galactinum |
Windthrown white ash with Scytinostroma galactinum root disease in northern lower Michigan. Person in image: Bob Heyd, MI DNR. |
| 5297081 |
sudden oak death |
Phytophthora ramorum |
Bark cracks with black ooze in coast live oak, a symptom of ramorum canker. |
| 5251049 |
sudden oak death |
Phytophthora ramorum |
Bark discoloration and zone lines in coast live oak. |
| 5037093 |
sudden oak death |
Phytophthora ramorum |
Symptoms of ramorum leaf blight on California bay laurel. |
| 5049008 |
dieback |
|
White birch with crown dieback |
| 5049020 |
frost and winter injury (general) |
|
Frost injury on black ash in 1992. |
| 5049021 |
frost and winter injury (general) |
|
Frost injury on black ash in 1992. |
| 5049022 |
black ash decline |
|
Declining black ash. |
| 5049038 |
decay |
|
Brown cubical rot, unknown cause. |
| 5251099 |
canker |
|
Canker under tarry spot on oak. Cause unknown. |
| 5049063 |
black rot |
Ceratocystis fimbriata |
Ceratocystis canker on aspen |
| 5048063 |
beech bark disease |
Nectria coccinea |
"Beech snap," commonly associated with beech bark disease. |
| 5048073 |
beech bark disease |
Nectria coccinea |
Beech snap, in a stand affected with beech bark disease. |
| 5048077 |
beech bark disease |
Nectria coccinea |
with Cryptococcus fagisuga on American beech. |
| 5048078 |
beech bark disease |
Nectria coccinea |
Tarry spot on beech affected with beech bark disease. |
| 5048080 |
beech bark disease |
Nectria coccinea |
Beech snap, in a stand affected with beech bark disease. |
| 5042088 |
beech bark disease |
Nectria coccinea |
Mortality in a stand affected by beech bark disease. |
| 5048085 |
beech bark disease |
Nectria coccinea |
Tarry spots on American beech affected with beech bark disease. |
| 5048089 |
beech bark disease |
Nectria coccinea |
Beech snap, in a stand affected with beech bark disease. |
| 5048092 |
beech bark disease |
Nectria coccinea |
Beech snap, in a stand affected with beech bark disease. |
| 5048093 |
beech bark disease |
Nectria coccinea |
Beech snap, in a stand affected with beech bark disease. |
| 5048094 |
beech bark disease |
Nectria coccinea |
Beech snap, in a stand affected with beech bark disease. |
| 5048098 |
beech bark disease |
Nectria coccinea |
Tree mortality in a stand affected by beech bark disease. |
| 5048099 |
beech bark disease |
Nectria coccinea |
Tarry spot with a small canker. |
| 5048100 |
beech bark disease |
Nectria coccinea |
Multiple cankers on American beech affected by beech bark disease. |
| 5049005 |
beech bark disease |
Nectria coccinea |
Beech snap, in a stand affected with beech bark disease. |
| 5251060 |
beech bark disease |
Nectria coccinea |
Tarry spots and beech scale on American beech. |
| 5251061 |
beech bark disease |
Nectria coccinea |
Tarry spots on American beech |
| 5043085 |
sudden oak death |
Phytophthora ramorum |
Sudden oak death (ramorum canker) symptoms on coast live oak |
| 5043086 |
sudden oak death |
Phytophthora ramorum |
Sudden oak death (ramorum canker) symptoms on coast live oak |
| 5043090 |
sudden oak death |
Phytophthora ramorum |
Sudden oak death symptoms on coast live oak in California. |
| 5043093 |
sudden oak death |
Phytophthora ramorum |
Sudden oak death (ramorum canker) symptoms on coast live oak |
| 5043094 |
sudden oak death |
Phytophthora ramorum |
Sudden oak death (ramorum canker) symptoms on coast live oak |
| 5038022 |
sudden oak death |
Phytophthora ramorum |
Sudden oak death (ramorum canker) symptoms on coast live oak |
| 5038023 |
sudden oak death |
Phytophthora ramorum |
Sudden oak death (ramorum canker) symptoms on coast live oak |
| 5383012 |
hairy stereum |
Stereum hirsutum |
|
| 5383013 |
wood decay |
Stereum spp. |
|
| 5383014 |
wood decay |
Stereum spp. |
|
| 5383015 |
wood decay |
Stereum spp. |
|
| 5383016 |
wood rot |
Bjerkandera fumosa |
|
| 5382934 |
Armillaria root rots |
Armillaria spp. |
|
| 5382935 |
Armillaria root rots |
Armillaria spp. |
|
| 5382936 |
Armillaria root rots |
Armillaria spp. |
|
| 5382937 |
Armillaria root rots |
Armillaria spp. |
|
| 5382938 |
Armillaria root rots |
Armillaria spp. |
|
| 5382939 |
Armillaria root rots |
Armillaria spp. |
|
| 5382796 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382797 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382798 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382799 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382800 |
wet rot |
Coniophora puteana |
|
| 5382794 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382795 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5393127 |
Botryosphaeria canker |
Botryosphaeria rhodina |
branch canker, close-up |
| 5393159 |
leaf spot |
Mycosphaerella alocasiae |
leaf spot, various stages |
| 5383056 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 5383027 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5383038 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
|
| 5383039 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
|
| 5034049 |
deadwood and snags |
|
Dead aspen tree unknown cause, and living tree adjacent |
| 5034087 |
dieback |
|
Decline and mortality in white birch. |
| 5035016 |
oak decline |
|
|
| 5389774 |
oak leaf blister |
Taphrina caerulescens |
leaf damage |
| 1473270 |
leaf spot |
Marssonia spp. |
aspen defoliation by Marssonia sp. and Melampsorella sp.; 9/4/1941 |
| 5035005 |
oak decline |
|
Branch dieback in pin oak. |
| 5035006 |
oak decline |
|
Branch dieback in pin oak, probably caused by two-lined chestnut borer. |
| 5034041 |
black rot |
Ceratocystis fimbriata |
|
| 5382185 |
witches' broom |
|
|
| 5382174 |
witches' broom |
|
Multiple witches’ brooms along trunk. Photograph taken July 17, 2008
|
| 5382048 |
stem decay of black walnut |
Phellinus weirianus |
Fruiting bodies on trunk.
|
| 5382032 |
walnut twig beetle |
Pityophthorus juglandis |
Boring dust at entrance of gallery.
|
| 5379700 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5379729 |
willow rust |
Melampsora salicina |
|
| 5379740 |
powdery mildew |
Erysiphe flexuosa |
|
| 5379741 |
powdery mildew |
Erysiphe flexuosa |
|
| 5379744 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
|
| 5379749 |
Eutypella canker |
Eutypella sorbi |
|
| 5379754 |
mountain ash juniper rust |
Gymnosporangium cornutum |
|
| 5379756 |
mountain ash juniper rust |
Gymnosporangium cornutum |
|
| 5379760 |
false tinder polypore |
Phellinus igniarius |
|
| 5379761 |
false tinder polypore |
Phellinus igniarius |
|
| 5379769 |
Ganoderma root and butt rot |
Ganoderma australe |
|
| 5379770 |
trunk rot |
Ustulina deusta |
|
| 5379771 |
trunk rot |
Ustulina deusta |
|
| 5379773 |
Armillaria root rots |
Armillaria spp. |
|
| 5379778 |
Dutch elm disease (novi-ulmi) |
Ophiostoma novo-ulmi |
|
| 5379779 |
Dutch elm disease (novi-ulmi) |
Ophiostoma novo-ulmi |
|
| 5379780 |
Dutch elm disease (novi-ulmi) |
Ophiostoma novo-ulmi |
|
| 5379781 |
Phellinus fungus |
Phellinus ferruginosus |
|
| 5379782 |
Phellinus fungus |
Phellinus ferruginosus |
|
| 5379788 |
tinder fungus |
Fomes fomentarius |
|
| 5379789 |
tinder fungus |
Fomes fomentarius |
|
| 5379794 |
Peniophora decay |
Peniophora incarnata |
|
| 5379795 |
Phytophthora root rot |
Phytophthora alni ssp. multiformis |
|
| 5379810 |
powdery mildew |
Phyllactinia guttata |
|
| 5379824 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5379825 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5379826 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5379841 |
beech bark disease |
Nectria coccinea |
|
| 5379842 |
logging damage |
|
|
| 5379863 |
wood ear |
Auricularia mesenterica |
|
| 5379871 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5379872 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5379873 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5379874 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5379877 |
hispidus canker |
Inonotus hispidus |
|
| 5379878 |
powdery mildew |
Phyllactinia fraxini |
|
| 5382598 |
Phytophthora disease of alders |
Phytophthora alni |
|
| 5382599 |
Phytophthora disease of alders |
Phytophthora alni |
|
| 5382601 |
Phytophthora disease of alders |
Phytophthora alni |
|
| 5382602 |
Phytophthora disease of alders |
Phytophthora alni |
|
| 5382603 |
Phellinus fungus |
Phellinus ferruginosus |
|
| 5382604 |
Phellinus fungus |
Phellinus ferruginosus |
|
| 5382605 |
Phellinus fungus |
Phellinus ferruginosus |
|
| 5382616 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382617 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382618 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382619 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382620 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382627 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382628 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382629 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382630 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382631 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382624 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382636 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382637 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382638 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382639 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382640 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382641 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382632 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382633 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382634 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382643 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382644 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382645 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382646 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382647 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382648 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382649 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382650 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382651 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382652 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382653 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382654 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382655 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382656 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382657 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382658 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382659 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382660 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382661 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382662 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382663 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382664 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382666 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382668 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382669 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382670 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382671 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382672 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382673 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382674 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382675 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382676 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382677 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382678 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382679 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382680 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382681 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382682 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382683 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382684 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382687 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382688 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382689 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382690 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382691 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382692 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382694 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382696 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382697 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382698 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382699 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382700 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382701 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382702 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382703 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382704 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382705 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382707 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382708 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382709 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382711 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382712 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382713 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382714 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382715 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382716 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382717 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382718 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382719 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382720 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382721 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382722 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382723 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382724 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382736 |
Hypoxylon canker |
Hypoxylon fragiforme |
|
| 5382784 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382785 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382786 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382787 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382788 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382789 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382790 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382791 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382792 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382793 |
intensive dieback of ash |
Chalara fraxinea |
|
| 5382625 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382623 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382626 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 1415266 |
crown gall |
Rhizobium radiobacter |
Galls |
| 5379793 |
crown gall |
Rhizobium radiobacter |
Galls |
| 5382600 |
Phytophthora disease of alders |
Phytophthora alni |
bark necrosis |
| 5382971 |
Ciboria fungus |
Ciboria batschiana |
|
| 5382965 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382966 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382967 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382968 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382969 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382970 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382972 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382973 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382974 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5379644 |
beech bark disease |
Nectria coccinea |
Fruiting bodies on a bark and debarked wood |
| 5379645 |
beech bark disease |
Nectria coccinea |
canker |
| 5379647 |
tar spot of maple |
Rhytisma acerinum |
stromata |
| 5379648 |
tar spot of maple |
Rhytisma acerinum |
stromata |
| 5379649 |
powdery mildew |
Sawadaea tulasnei |
|
| 5379660 |
Melampsora leaf rust |
Melampsora laricis-populina |
|
| 5379661 |
Melampsora leaf rust |
Melampsora laricis-populina |
|
| 5379671 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
|
| 5379672 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
|
| 5379683 |
Ceratocystis wilts |
Ceratocystis spp. |
|
| 5379684 |
wet rot |
Coniophora puteana |
|
| 5382635 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382665 |
chestnut blight or canker |
Cryphonectria parasitica |
in winter |
| 5382642 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5382685 |
chestnut blight or canker |
Cryphonectria parasitica |
in winter |
| 5382983 |
Rosellinia fungus |
Rosellinia quercina |
|
| 5382984 |
Rosellinia fungus |
Rosellinia quercina |
|
| 4822042 |
Fusarium root rot and wilt |
Fusarium oxysporum |
Thinning crown of infected tree |
| 4822043 |
Fusarium root rot and wilt |
Fusarium oxysporum |
Distinctive pale to dark brown (sometimes with a purplish hue)staining or discoloration of the xylem. This soil borne fungus enters the roots by direct penetration or through root wounds during transplanting/landscape maintance, or vectored by feeding injury caused by plant parastic nematodes. Once inside a susceptible host, the fungus enters the xylem and colonizes the vascular system restricting water flow. |
| 4822035 |
Inonotus heartrot |
Inonotus rickii |
Stem cross sections showing advanced wood decay. Note the distinct, narrow darkened zones of sound wood at the margins of the decayed wood. |
| 4822036 |
Inonotus heartrot |
Inonotus rickii |
longitudinal stem section showing advanced wood decay. Note the distinct, narrow darkened zones of sound wood at the margins of the decayed wood.. |
| 4822033 |
Inonotus heartrot |
Inonotus rickii |
Sap exudation ("bleeding")and associated bark staining at infected branch stub. |
| 5346098 |
nuclear polyhedrosis virus |
Nucleopolyhedrovirus N/A |
Larvae on quaking aspen killed by nucleopolyhedrosis virus, Sange de Cristo Range, CO, July 2007 |
| 5005056 |
laurel wilt |
Raffaelea lauricola |
vascular staining from fungus associated with the redbay ambrosia beetle (Xyleborus glabratus) |
| 2200003 |
laurel wilt |
Raffaelea lauricola |
Wilted redbay foliage |
| 5377658 |
solitary maple leaf gall mite |
Aceria macrochela |
|
| 5383223 |
laurel wilt |
Raffaelea lauricola |
Camphor tree with dieback symptoms caused by laurel wilt infection |
| 5383224 |
laurel wilt |
Raffaelea lauricola |
Symptoms of laurel wilt infection on camphor tree |
| 5383225 |
laurel wilt |
Raffaelea lauricola |
Symptoms of laurel wilt infection on camphor tree |
| 5383226 |
laurel wilt |
Raffaelea lauricola |
Group of sassafras trees with symptoms of advancing laurel wilt disease |
| 5383227 |
laurel wilt |
Raffaelea lauricola |
Leaf symptoms of laurel wilt disease in a group of small sassafras trees |
| 5383213 |
laurel wilt |
Raffaelea lauricola |
Redbay mortality on Jekyll Island caused by laurel wilt disease |
| 5383214 |
redbay ambrosia beetle |
Xyleborus glabratus |
Redbay trunk with ambrosia beetle frass tubes at points of entrance for adult beetles constructing galleries |
| 5383215 |
laurel wilt |
Raffaelea lauricola |
Redbay trunk with bark removed exposing sapwood with typical black staining caused by laurel wilt disease |
| 5383216 |
laurel wilt |
Raffaelea lauricola |
Redbay trees dying from laurel wilt disease; center tree responding with epicormic sprouting |
| 5383217 |
laurel wilt |
Raffaelea lauricola |
Redbay mortality on Jekyll Island caused by laurel wilt disease |
| 5383221 |
laurel wilt |
Raffaelea lauricola |
Pondspice bush killed by laurel wilt disease |
| 5383222 |
laurel wilt |
Raffaelea lauricola |
Stem of pondspice plant infected with laurel wilt fungus showing typical black staining in sapwood |
| 5383208 |
laurel wilt |
Raffaelea lauricola |
Redbay mortality on Jekyll Island caused by laurel wilt disease |
| 5383209 |
laurel wilt |
Raffaelea lauricola |
Redbay tree infected with laurel wilt fungus showing typical black staining of the sapwood |
| 5383210 |
laurel wilt |
Raffaelea lauricola |
Redbay tree infected with laurel wilt fungus showing typical black staining of the sapwood |
| 5383211 |
laurel wilt |
Raffaelea lauricola |
Redbay stump and sprouts following mortality caused by laurel wilt disease |
| 5383212 |
laurel wilt |
Raffaelea lauricola |
Initial symptoms of laurel wilt disease in a group of sassafras trees |
| 5034002 |
Eutypella canker |
Eutypella parasitica |
A large Eutypella canker at the base of a sugar maple. |
| 5032042 |
oak wilt |
Ceratocystis fagacearum |
Vertical cracks in oak killed by oak wilt, indicating the presence of spore mats under the bark. |
| 5033098 |
Eutypella canker |
Eutypella parasitica |
A Eutypella canker at the base of a sugar maple. |
| 5334085 |
oak saucer gall |
Andricus parmula |
Wasp Gall |
| 5334058 |
leaf blister of elm |
Taphrina ulmi |
|
| 5334060 |
American elm |
Ulmus americana |
treated for Dutch elm disease |
| 5334062 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 5334064 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 5334076 |
Verticillium wilt |
Verticillium dahliae |
vascular discoloration and foliar symptoms |
| 5334082 |
oak leaf blister |
Taphrina caerulescens |
light green spots = oak leaf blister; brown spots = invasion of oak leaf blister lesions by Monochaetia spp. |
| 5335031 |
Septoria leaf spot and cankers |
Septoria spp. |
poplar |
| 5334083 |
oak leaf blister |
Taphrina caerulescens |
|
| 5334084 |
oak leaf blister |
Taphrina caerulescens |
|
| 5335039 |
black canker |
Physalospora miyabeana |
|
| 0758071 |
oak wilt |
Ceratocystis fagacearum |
Group of dead Texas live oaks killed by oak wilt |
| 0758075 |
oak wilt |
Ceratocystis fagacearum |
Foliage in early stages of wilt by oak wilt disease. |
| 5377825 |
Eriophyid mites |
Eriophyes spp. |
|
| 5377822 |
Eriophyid mites |
Eriophyes spp. |
|
| 5377823 |
Eriophyid mites |
Eriophyes spp. |
|
| 5377817 |
Eriophyid mites |
Eriophyes spp. |
|
| 5377818 |
Eriophyid mites |
Eriophyes spp. |
|
| 5377819 |
Eriophyid mites |
Eriophyes spp. |
|
| 5377820 |
Eriophyid mites |
Eriophyes spp. |
|
| 5377821 |
Eriophyid mites |
Eriophyes spp. |
|
| 5377826 |
Eriophyid mites |
Eriophyes spp. |
|
| 1427077 |
unknown |
|
Non-SOD leaf symptoms on Rhododendron in CA (causal agent unknown). |
| 5033001 |
crown gall |
Rhizobium radiobacter |
Agrobacterium galls on roots. |
| 5368445 |
Marssonina leaf spots |
Marssonina spp. |
Upper surface of leaf with gray/white spots and thin brown borders. |
| 5368446 |
Marssonina leaf spots |
Marssonina spp. |
Lower surface of leaf shows leaf spots are darker brown than upper surface appearance. |
| 5368461 |
Cryptocline fungus |
Cryptocline betularum |
Leaves with spots starting out tan and turning gray then white. |
| 5368462 |
Cryptocline fungus |
Cryptocline betularum |
Close-up of leaf spots where in some spots the missing tissue in the center was where the spore-producing body of the fungus was located. |
| 5368678 |
Verticillium wilts |
Verticillium spp. |
Shortly after transplanting, potted trees showed poor growth. |
| 5368679 |
Verticillium wilts |
Verticillium spp. |
Top dieback at junction between tissue infected by a secondary fungus and healthy tissue. |
| 5368680 |
Verticillium wilts |
Verticillium spp. |
Bark stripped off top portion of trunk and branches to show dead vascular tissue. |
| 5368681 |
Verticillium wilts |
Verticillium spp. |
Lower portion of trunk with outer tissue stripped off to reveal discolored xylem tissue. |
| 5368682 |
Verticillium wilts |
Verticillium spp. |
Trunk portion near ground level with outer tissue cut away to reveal discolored xylem tissue. |
| 5368684 |
Verticillium wilts |
Verticillium spp. |
Cross and tangential sections of the lower trunk of one of the nursery trees showing characteristic olive green color of Verticillium-infected xylem. |
| 5368685 |
Verticillium wilts |
Verticillium spp. |
Trunk section with outer tissue cut away to reveal characteristic olive green color of Verticillium-infected xylem. |
| 5368707 |
Dutch elm disease |
Ophiostoma ulmi |
Characteristic asexual stage or "synnemata", conidiophores with clusters of colorless conidia at the top. |
| 5368713 |
downy spot |
Microstroma juglandis |
Upper surface of infected leaves with light green colored bumps. |
| 5368714 |
downy spot |
Microstroma juglandis |
Lower surface of infected leaves showing white mold directly opposite the bumps on upper surface. |
| 5368716 |
downy spot |
Microstroma juglandis |
Close-up of light green colored bumps on upper surface of leaf. |
| 5368742 |
vein pocket gall |
Macrodiplosis erubescens |
Branch with severely symptomatic leaves. |
| 5368743 |
vein pocket gall |
Macrodiplosis erubescens |
Close-up of galling along the midrib and major veins. |
| 5368744 |
vein pocket gall |
Macrodiplosis erubescens |
View of upper leaf surface symptoms. |
| 5368745 |
vein pocket gall |
Macrodiplosis erubescens |
View of lower leaf surface symptoms. |
| 5368937 |
black spot of elm |
Stegophora ulmea |
Leaves with small, raised black spots with a fine area of white tissue surrounding them, found mostly between the major veins. |
| 5369056 |
Septoria leaf spot and cankers |
Septoria spp. |
Dark brown, angular spots with gray flecks. |
| 5369057 |
Septoria leaf spot and cankers |
Septoria spp. |
Close-up of the underside of the leaf showing dark brown, angular spots with gray flecks. |
| 5334018 |
fire blight |
Erwinia amylovora |
crabapple |
| 5334020 |
apple scab |
Venturia inaequalis |
Crabapple |
| 5334017 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
|
| 5334021 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5377849 |
aphid |
Prociphilus bumeliae |
|
| 5377848 |
aphid |
Prociphilus bumeliae |
|
| 5377847 |
aphid |
Prociphilus bumeliae |
|
| 5377844 |
aphid |
Prociphilus bumeliae |
|
| 5377845 |
aphid |
Prociphilus bumeliae |
|
| 5377846 |
aphid |
Prociphilus bumeliae |
|
| 1473189 |
Cenangium cankers |
Cenangium spp. |
canker high on bole |
| 5033086 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 5037083 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
|
| 5037087 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
|
| 1263077 |
Ceratocystis canker - stain of sycamore |
Ceratocystis fimbriata f.sp. platani |
|
| 1263076 |
Ceratocystis canker - stain of sycamore |
Ceratocystis fimbriata f.sp. platani |
Infected plane branch, showing dark streaks |
| 1949025 |
Septoria canker of poplar |
Mycosphaerella populorum |
Cankers caused by Mycosphaerella populorum on poplar stems. |
| 1949011 |
oak wilt |
Ceratocystis fagacearum |
Advanced stage of Ceratocystis fagacearum infection on oak: general view of wilted tree. |
| 1949012 |
oak wilt |
Ceratocystis fagacearum |
Foliar symptoms caused by Ceratocystis fagacearum on oak. |
| 1949013 |
oak wilt |
Ceratocystis fagacearum |
Foliar symptoms of Ceratocystis fagacearum on black oak (Quercus velutina) showing bronzing starting at the leaf apices and lobes, and a localized area of green tissue around the base of the midrib. |
| 0725094 |
Sapstreak disease of maple |
Ceratocystis virescens |
Trunk of Acer saccharum showing sap streak symptoms due to Ceratocystis virescens. |
| 0725090 |
oak wilt |
Ceratocystis fagacearum |
Wilted branch on northern pin oak (Quercus ellipsoidalis) in Minnesota. |
| 0725091 |
oak wilt |
Ceratocystis fagacearum |
Northern pin oak (Quercus ellipsoidalis) killed by Ceratocystis fagacearum in Minnesota. The retention of some dead leaves is characteristic of the disease. |
| 0725092 |
oak wilt |
Ceratocystis fagacearum |
Xylem of red oak affected by Ceratocystis fagacearum showing diffuse stain (often there is less stain than this). |
| 0725065 |
oak wilt |
Ceratocystis fagacearum |
Ceratocystis fagacearum in red oak (probably northern pin oak Quercus ellipsoidalis) surrounding a new house in Minnesota. (It was probably the pruning of trees during the building of the house that allowed oak wilt to enter the stand. |
| 0725023 |
Hypoxylon canker of aspen |
Entoleuca mammata |
Canker of Populus tremula caused by Hypoxylon mammatum. |
| 0660027 |
Ceratocystis canker - stain of sycamore |
Ceratocystis fimbriata f.sp. platani |
Section of infected plane branch, showing dark streaks due to Ceratocystis fimbriata f.sp. platani. |
| 0660028 |
Ceratocystis canker - stain of sycamore |
Ceratocystis fimbriata f.sp. platani |
Plane tree showing advanced dieback after 2-3 years, after infection by Ceratocystis fimbriata f.sp. platani. |
| 0660029 |
Ceratocystis canker - stain of sycamore |
Ceratocystis fimbriata f.sp. platani |
Invasion of plane wood by Ceratocystis fimbriata f. sp. platani. |
| 1473016 |
Helicobasidium fungi |
Helicobasidium spp. |
decay on Tree 120 caused by Helicobasidium |
| 1473073 |
sooty bark |
Cenangium populinum |
|
| 1473076 |
canker |
|
|
| 1473077 |
canker |
|
this has two cankers Cenaginium and Nectria |
| 1473190 |
Armillaria root rots |
Armillaria spp. |
dying aspen |
| 5345097 |
sudden aspen decline |
|
Tree mortality in three aspen stands believed due to sudden aspen decline (causes unknown), near Jemez Springs, NM |
| 0656059 |
Elm yellows |
Phytoplasma N/A |
Necrotic rootlets on Ulmus americana caused by elm phloem necrosis MLO infection. |
| 0656057 |
Elm yellows |
Phytoplasma N/A |
Early foliar symptoms caused by elm phloem necrosis phytoplasma; healthy (left) and diseased (right) branches, showing epinasty of leaves. |
| 0656058 |
Elm yellows |
Phytoplasma N/A |
Phloem discoloration in Ulmus americana caused by elm phloem necrosis phytoplasma infection; healthy (top) and diseased (bottom). |
| 5251041 |
ash decline |
|
Decline symptoms in ash tree in Iowa. |
| 1198011 |
oak tatters |
|
Recent research has shown that oak tatters is probably caused by herbicide drift. Leaves affected by this syndrome have a shredded or tattered appearance. |
| 1473087 |
Nectria canker |
Nectria spp. |
external before removing thin outter bark; "Nectria-like" canker |
| 1473088 |
Nectria canker |
Nectria spp. |
canker after removing the thin outter bark; compare to 1473087 |
| 1473320 |
witches broom rust |
Gymnosporangium nelsonii |
leaf rust on serviceberry, broom on juniper; 8/16/1942 |
| 5356774 |
X-disease |
Phytoplasma MLO |
Symptoms of "Droopy Aspen," caused by an unknown phytoplasmic agent. |
| 5366802 |
leaf mold |
Articularia quercina |
Gambel oak with oak witches' broom, caused by the mold Articularia quercina. |
| 5356717 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 5356716 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 1473154 |
black rot |
Ceratocystis fimbriata |
also referred to as black canker; photo taken 9/1/1968 |
| 1473164 |
black rot |
Ceratocystis fimbriata |
photo taken 7/1/1970 |
| 1473165 |
Cryptosphaeria canker |
Cryptosphaeria ligniota |
canker with ax for scale; photo taken 9/1/1972. |
| 1473167 |
Macrophoma rough bark disease |
Macrophoma tumefaciens |
|
| 1473170 |
Cryptosphaeria canker |
Cryptosphaeria ligniota |
photo taken in 1973 |
| 1473174 |
artist's conk |
Ganoderma applanatum |
windthrow; photo taken 8/1973 |
| 1473175 |
artist's conk |
Ganoderma applanatum |
sporophore; photo taken 9/1973 |
| 1473187 |
aspen/poplar |
Populus spp. |
Work was done on this syndrome in the 1970s as many isolated discoveries of the syndrome were made in the region. It is suspected to be an expression of a developmental disease resuting from a stress to roots; no virus or biotic agent found. Photo taken 9/1975 |
| 1473186 |
aspen/poplar |
Populus spp. |
Work was done on this syndrome in the 1970s as many isolated discoveries of the syndrome were made in the region. It is suspected to be an expression of a developmental disease resuting from a stress to roots; no virus or biotic agent found. Photo taken 9/1975 |
| 1473281 |
Cytospora cankers |
Cytospora spp. |
close-up of canker in image 1473280 |
| 1473280 |
Cytospora cankers |
Cytospora spp. |
1941; perennial type Valsa canker on 6.2" dbh aspen marked for cutting on sanitation plot. Upper portion of canker recent and active. |
| 1473108 |
Hypoxylon canker of aspen |
Entoleuca mammata |
10" dbh aspen girdled by canker |
| 1473093 |
black rot |
Ceratocystis fimbriata |
|
| 1473086 |
Cenangium cankers |
Cenangium spp. |
inner bark deteriorates to a black, soot-like mass; 1961 |
| 1473075 |
Nectria canker |
Nectria spp. |
|
| 1473039 |
artist's conk |
Ganoderma applanatum |
|
| 1473006 |
quaking aspen |
Populus tremuloides |
|
| 1473013 |
quaking aspen |
Populus tremuloides |
tree #539 |
| 1473012 |
trunk rot |
Pholiota adiposa |
tree #532 |
| 1473321 |
witches broom rust |
Gymnosporangium nelsonii |
leaf rust on serviceberry, broom on juniper; 1941 |
| 1473003 |
canker |
|
|
| 1473004 |
decay |
|
|
| 1473005 |
canker |
|
|
| 1473038 |
Hypoxylon canker of aspen |
Entoleuca mammata |
canker on stem |
| 1473065 |
bacterial wetwood |
Enterobacter nimipressuralis |
|
| 1473066 |
bacterial wetwood |
Enterobacter nimipressuralis |
|
| 1473067 |
bacterial wetwood |
Enterobacter nimipressuralis |
|
| 1473007 |
burl and decay |
|
tree 368 |
| 1473008 |
wood decay |
Pholiota albocrenulata |
tree 396 |
| 5045006 |
oak wilt |
Ceratocystis fagacearum |
|
| 1473272 |
oak wilt |
Ceratocystis fagacearum |
one week after early symptoms had appeared. Rapid leaf fall is characteristic; 7/14/1953 |
| 5059040 |
sycamore anthracnose |
Apiognomonia veneta |
Light infection of sycamore anthracnose. |
| 5021035 |
Elm yellows |
Phytoplasma N/A |
|
| 5259073 |
oak leaf blister |
Taphrina caerulescens |
|
| 5048007 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
deliquescent branching |
| 5037088 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
|
| 5037084 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
|
| 5037085 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
witch's broom |
| 5037077 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
abnormal branching |
| 5037078 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
abnormal branching |
| 5037079 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
affected tree in landscape |
| 5037080 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
|
| 5037081 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
|
| 5037082 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
severely affected tree |
| 5022068 |
ash decline |
|
Ash decline (Not Emerald Ash Borer) at Moraine State Park, PA |
| 5048002 |
ash decline |
|
Crown dieback in white ash |
| 5048003 |
ash decline |
|
Group of ash with decline symptoms |
| 5047051 |
smooth patch of oak |
Aleurodiscus oakesii |
Several smooth patch areas on white oak |
| 5047066 |
Eastern filbert blight |
Anisogramma anomala |
|
| 5048064 |
American beech |
Fagus grandifolia |
Healthy bark of American beech |
| 5049019 |
ash anthracnose |
Gnomoniella fraxini |
Very heavy ash anthracnose on black ash. |
| 5259074 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259075 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259076 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259077 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259078 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259080 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259081 |
oak leaf blister |
Taphrina caerulescens |
|
| 5258066 |
tar spot of maple |
Rhytisma acerinum |
|
| 5258067 |
tar spot of maple |
Rhytisma acerinum |
|
| 5258068 |
tar spot of maple |
Rhytisma acerinum |
|
| 5259069 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259070 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259072 |
oak leaf blister |
Taphrina caerulescens |
|
| 5257036 |
eye spot |
Phyllosticta minima |
|
| 5257037 |
eye spot |
Phyllosticta minima |
|
| 5265038 |
oak leaf blister |
Taphrina caerulescens |
|
| 5265044 |
oak wilt |
Ceratocystis fagacearum |
|
| 5220075 |
Botryosphaeria canker |
Botryosphaeria ribis |
|
| 5220076 |
Botryosphaeria canker |
Botryosphaeria ribis |
|
| 5190098 |
oak leaf blister |
Taphrina caerulescens |
symptoms of oak leaf blister |
| 5190100 |
Septoria leaf spot and canker |
Septoria musiva |
necrotic area with dark fruiting bodies in center |
| 5030045 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5030059 |
oak decline |
|
Branch dieback in upper crown. |
| 5030060 |
iron deficiency |
|
Chlorosis and dieback from iron deficiency. |
| 5030062 |
oak decline |
|
Oak decline and dieback |
| 5030063 |
oak decline |
|
Oak decline and dieback |
| 5030064 |
oak decline |
|
1997 |
| 5030065 |
oak decline |
|
Moderate to severe decline symptoms in mature red oak. |
| 5030066 |
oak decline |
|
Severe decline symptoms on oaks in the state of Colima, Mexico |
| 5030067 |
oak decline |
|
|
| 5030069 |
oak wilt |
Ceratocystis fagacearum |
Spore mat and pressure pad under the bark of oak-wilt killed tree. Jenny Juzwik is the person in the picture. |
| 5030087 |
oak wilt |
Ceratocystis fagacearum |
aerial photo |
| 5030099 |
white heartwood rot |
Phellinus tremulae |
|
| 1501028 |
Elm yellows |
Phytoplasma N/A |
Elm phloem necrosis, stem symptoms |
| 1407052 |
Dutch elm disease |
Ophiostoma ulmi |
Like all living things, trees eventually die and decay, victims of many living and manmade agents. The agent here is Dutch elm disease. To ward off this widespread infection, keep elm trees well pruned. If they do become infected, cut and destroy the diseased trees as soon as possible. |
| 1509093 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt |
| 1509094 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt |
| 1509095 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt |
| 1509096 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt |
| 1509097 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt |
| 1509098 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt |
| 1509099 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt |
| 1509101 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt |
| 1506071 |
chestnut blight or canker |
Cryphonectria parasitica |
Chestnut blight - branch symptoms |
| 1506072 |
chestnut blight or canker |
Cryphonectria parasitica |
Chestnut blight - stem canker |
| 1504027 |
Cylindrocladium root diseases |
Cylindrocladium spp. |
Root rot; Cylindrocladium sp.; black walnut; Edwards Nursery |
| 1502067 |
Strumella canker |
Urnula craterium |
Strumella canker; maple |
| 1502069 |
Strumella canker |
Urnula craterium |
Strumella canker; white oak |
| 1502071 |
Strumella canker |
Urnula craterium |
Strumella canker; oak |
| 1502072 |
hispidus canker |
Inonotus hispidus |
Polyporus hispidus; nutall oak |
| 1502073 |
hispidus canker |
Inonotus hispidus |
Polyporus hispidus canker |
| 1502078 |
orange hobnail canker |
Cryphonectria gyrosa |
Endothia gyrosa canker; spanish oak |
| 1502079 |
hispidus canker |
Inonotus hispidus |
Hispidus canker |
| 1502081 |
Gibberella canker |
Gibberella baccata |
Fusarium lateritium canker; mulberry |
| 1502082 |
Gibberella canker |
Gibberella baccata |
Fusarium lateritium canker; mulberry |
| 1502085 |
black knot |
Apiosporina morbosa |
Black knot; cherry; Dry Prong (Stuart Lake) |
| 1503024 |
oak leaf blister |
Taphrina caerulescens |
Oak leaf blister; S. red oak |
| 1503072 |
decay |
|
Heart rot; hardwoods; butt bulge shows the extent |
| 1503073 |
decay |
|
Stump rot |
| 1503079 |
ceramic parchment |
Xylobolus frustulatus |
Heart rot; Stereum frustulosum |
| 1503080 |
sulfur shelf |
Laetiporus sulphureus |
Heart rot; Polyporus sulphureus |
| 1503081 |
false turkey tail |
Stereum gausapatum |
Heart rot; Stereum gausapatum |
| 1503082 |
false turkey tail |
Stereum gausapatum |
Heart rot; Stereum gausapatum |
| 1503083 |
false turkey tail |
Stereum gausapatum |
Heart rot; Stereum gausapatum |
| 1503088 |
false turkey tail |
Stereum gausapatum |
Heart rot; Stereum gausapatum |
| 1503090 |
Irpex canker |
Spongipellis pachyodon |
Heart rot; Irpex mollis |
| 1501032 |
Dutch elm disease |
Ophiostoma ulmi |
Dutch elm disease, vascular streak |
| 1501034 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, vascular streak |
| 1501041 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, Texas red oak leaf symptoms |
| 1501042 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, Texas red oak leaf symptoms |
| 1501043 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, Texas red oak leaf symptoms |
| 1501044 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, Live oak leaf symptoms |
| 1501045 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, Live oak leaf symptoms |
| 1501046 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, Live oak leaf symptoms |
| 1501047 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, Live oak leaf symptoms |
| 1501048 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, Live oak tree symptoms |
| 1501050 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, Live oakbranch showing symptoms |
| 1501053 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, V.A.Cemetary |
| 1501056 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt kill in pasture, S. of Kerrville |
| 1501057 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, live oak, Kerrville State Park |
| 1501058 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, live oak, Kerrville State Park |
| 1501059 |
oak wilt |
Ceratocystis fagacearum |
Oak wilt, live oak, Kerrville State Park |
| 1468008 |
canker |
|
|
| 1238006 |
decay |
|
Heart rot cross-section showing inner branching |
| 3047015 |
decay |
|
cut logs showing hollowing; heartrot |
| 5202057 |
oak wilt |
Ceratocystis fagacearum |
Active oak wilt pocket, early July, Eau Claire Co., WI |
| 5202068 |
tar spot |
Rhytisma americanum |
Raised spots of leaf; Photo taken in August in Ramsey Co., MN |
| 5202069 |
tar spot |
Rhytisma americanum |
Raised spots on leaf; Photo taken in August in Ramsey Co., MN |
| 5176068 |
roble beech |
Nothofagus obliqua |
Tree with symptoms of decline, IX Region, Chile |
| 5030046 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5030047 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5030049 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5030050 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5030052 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5030057 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5029041 |
Eutypella canker |
Eutypella parasitica |
"Cobra-head" canker. |
| 5029042 |
Eutypella canker |
Eutypella parasitica |
A large canker on the main stem of a sugar maple |
| 5029075 |
annosum root disease |
Heterobasidion annosum |
|
| 5029085 |
Hypoxylon canker of aspen |
Entoleuca mammata |
Canker with cracked bark |
| 5029086 |
Hypoxylon canker of aspen |
Entoleuca mammata |
Top breakage at canker. |
| 5029088 |
Hypoxylon canker of aspen |
Entoleuca mammata |
|
| 5029089 |
Hypoxylon canker of aspen |
Entoleuca mammata |
|
| 5029090 |
Hypoxylon canker of aspen |
Entoleuca mammata |
Cracked bark typical of Hypoxylon canker. |
| 5029091 |
Hypoxylon canker of aspen |
Entoleuca mammata |
Canker on young aspen. |
| 5029094 |
clinker polypore |
Inonotus obliquus |
|
| 5027096 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
|
| 5027097 |
ash yellows phytoplasma |
Candidatus Phytoplasma fraxini |
Thin crowns, dieback and mortality caused by the ash yellows phytoplasma |
| 5028012 |
drought |
|
White birch declining and dead following drought. |
| 5028014 |
black knot |
Apiosporina morbosa |
Black knot gall (sporocarp) on black cherry |
| 5028029 |
sudden oak death |
Phytophthora ramorum |
|
| 5028030 |
sudden oak death |
Phytophthora ramorum |
|
| 5028031 |
sudden oak death |
Phytophthora ramorum |
|
| 5028032 |
sudden oak death |
Phytophthora ramorum |
|
| 5028033 |
sudden oak death |
Phytophthora ramorum |
|
| 5028034 |
sudden oak death |
Phytophthora ramorum |
|
| 5028036 |
sudden oak death |
Phytophthora ramorum |
|
| 5028037 |
sudden oak death |
Phytophthora ramorum |
|
| 5028038 |
sudden oak death |
Phytophthora ramorum |
|
| 5028039 |
sudden oak death |
Phytophthora ramorum |
|
| 5028040 |
sudden oak death |
Phytophthora ramorum |
|
| 5028041 |
sudden oak death |
Phytophthora ramorum |
|
| 5028042 |
sudden oak death |
Phytophthora ramorum |
|
| 5028043 |
sudden oak death |
Phytophthora ramorum |
|
| 5028044 |
sudden oak death |
Phytophthora ramorum |
|
| 5028047 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 5028048 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
Cankers often ooze sap from beneath the bark. |
| 5028049 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 5029008 |
Dutch elm disease |
Ophiostoma ulmi |
Early wilt symptoms of Dutch elm disease. |
| 5029009 |
Dutch elm disease |
Ophiostoma ulmi |
discoloration in wood; Vascular streaks caused by Ophiostoma ulmi in elm wood. |
| 1400042 |
stem girdling roots |
|
Linden with girdling roots. |
| 1397074 |
Eutypella canker |
Eutypella parasitica |
Eutypella canker creating a hazard in a campground |
| 3037017 |
oak leaf blister |
Taphrina caerulescens |
Taphrina sp. caused oak leaf blister |
| 3037024 |
Neonectria cankers |
Neonectria spp. |
Perennial target canker |
| 3036023 |
drought |
|
drought of maple |
| 3036024 |
drought |
|
drought of maple |
| 3036029 |
Verticillium wilt |
Verticillium albo atrum |
vascular streaking - maple |
| 3036032 |
Verticillium wilt |
Verticillium albo atrum |
vascular streaking |
| 3036048 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
canker on black oak |
| 3036050 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
|
| 3036053 |
wood decay |
Pholiota albocrenulata |
decay branch on black oak |
| 3036055 |
wood decay |
Pholiota albocrenulata |
heart rot of a bole |
| 3036066 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
canker of oak |
| 3036067 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
|
| 3036078 |
root rot |
Phellinus hartigii |
Annosus root rot |
| 3036100 |
ozone |
|
ozone injury to sourwood |
| 3037007 |
oak decline |
|
oak decline- city problems, AL |
| 3037013 |
ozone |
|
ozone pollution to yellow poplar leaves |
| 3035061 |
dogwood anthracnose |
Discula destructiva |
symptoms on dogwoog leaves |
| 3035062 |
dogwood anthracnose |
Discula destructiva |
pattern of decline |
| 3035063 |
dogwood anthracnose |
Discula destructiva |
symptoms on leaves |
| 3035064 |
dogwood anthracnose |
Discula destructiva |
symptoms on twig |
| 3035065 |
dogwood anthracnose |
Discula destructiva |
symptoms on leaves in green house |
| 3035066 |
powdery mildews |
|
infected dogwood |
| 3035069 |
anthracnose |
Colletotrichum acutatum |
symptoms of blackgum anthracnose on leave |
| 3035070 |
dogwood anthracnose |
Discula destructiva |
old dogwood anthracnose canker on dead stem |
| 3035071 |
dogwood anthracnose |
Discula destructiva |
in winter with dead leaves on tree |
| 3035072 |
dogwood anthracnose |
Discula destructiva |
symptoms on leaves |
| 3035073 |
dogwood anthracnose |
Discula destructiva |
symptoms on flowers |
| 3035074 |
dogwood anthracnose |
Discula destructiva |
flowers |
| 3035094 |
American hawthorn rust |
Gymnosporangium globosum |
Cedar hawthorne rust |
| 3036012 |
poplar rust |
Melampsora medusae |
rust on cottonwood |
| 0590024 |
Cylindrocladium root diseases |
Cylindrocladium spp. |
Cylindrocladium on sweetgum |
| 1501108 |
fusiform rust |
Cronartium quercuum f.sp. fusiforme |
Fusiform rust; telia on oak leaf; Greenhouse |
| 1501110 |
fusiform rust |
Cronartium quercuum f.sp. fusiforme |
Fusiform rust; telia on oak leaf; Greenhouse |
| 1235105 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 1224218 |
blue stain |
Ophiostoma huntii |
Fungus on Pecan. Ambrosia Beetles. |
| 4214070 |
iron deficiency |
|
iron deficiency |
| 4214094 |
Phellinus heartrots |
Phellinus spp. |
resulting from a mechanical wound |
| 4214095 |
cold injury (low temperature) |
|
maple- cold injury |
| 4215002 |
smooth patch of oak |
Aleurodiscus oakesii |
affected area of bark: acid-etched/moth-eaten look |
| 4215003 |
bacterial wetwood |
Enterobacter nimipressuralis |
elm with active ooze and bleached bark |
| 5021065 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5021066 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5022026 |
beech bark disease |
Nectria coccinea |
|
| 5022028 |
beech bark disease |
Nectria coccinea |
|
| 5110059 |
Phytophthora kernoviae |
Phytophthora kernoviae |
necrosis of rhododendron leaves |
| 5110020 |
Phytophthora kernoviae |
Phytophthora kernoviae |
external lesion; 14 November 2003 |
| 5110021 |
Phytophthora kernoviae |
Phytophthora kernoviae |
lesion on trunk |
| 5110022 |
Phytophthora kernoviae |
Phytophthora kernoviae |
bleeding lesion on trunk |
| 5110023 |
Phytophthora kernoviae |
Phytophthora kernoviae |
lesions of foliage of magnolia |
| 5110024 |
Phytophthora kernoviae |
Phytophthora kernoviae |
wilting of infected rhododendron |
| 5110025 |
Phytophthora kernoviae |
Phytophthora kernoviae |
wilting |
| 5110053 |
Phytophthora kernoviae |
Phytophthora kernoviae |
|
| 5110054 |
Phytophthora kernoviae |
Phytophthora kernoviae |
bleeding lesion on trunk |
| 5021077 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 5032025 |
oak wilt |
Ceratocystis fagacearum |
|
| 5041033 |
sudden oak death |
Phytophthora ramorum |
bleeding discoloration and cracks |
| 5041034 |
sudden oak death |
Phytophthora ramorum |
bleeding discoloration and cracks |
| 5041035 |
sudden oak death |
Phytophthora ramorum |
bleeding discoloration |
| 5041036 |
sudden oak death |
Phytophthora ramorum |
bleeding and cracking symptoms |
| 5041037 |
sudden oak death |
Phytophthora ramorum |
bleeding cracks |
| 5041038 |
sudden oak death |
Phytophthora ramorum |
|
| 5041039 |
sudden oak death |
Phytophthora ramorum |
bleeding symptom |
| 5041047 |
sudden oak death |
Phytophthora ramorum |
bleeding cracks |
| 5041048 |
sudden oak death |
Phytophthora ramorum |
exposed canker |
| 5041049 |
sudden oak death |
Phytophthora ramorum |
long drips on trunk |
| 5041050 |
sudden oak death |
Phytophthora ramorum |
|
| 5041051 |
sudden oak death |
Phytophthora ramorum |
tree mortality |
| 5041065 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5046061 |
sudden oak death |
Phytophthora ramorum |
|
| 5046053 |
sudden oak death |
Phytophthora ramorum |
infected hillside |
| 5046078 |
sweet bay |
Laurus nobilis |
sooty mold and leaf symptoms |
| 1427010 |
sooty mold |
|
Sooty mold on California laurel. Several different fungi may cause sooty mold. The fungi do not cause disease, but grow on surfaces that collect honeydew exudations of sucking insects. |
| 5059045 |
oak leaf blister |
Taphrina caerulescens |
|
| 5059046 |
oak leaf blister |
Taphrina caerulescens |
|
| 5059038 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 5059039 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 5057010 |
ash heart rot |
Perenniporia fraxinophila |
|
| 5057073 |
eye spot |
Phyllosticta minima |
|
| 5057074 |
eye spot |
Phyllosticta minima |
|
| 5057075 |
eye spot |
Phyllosticta minima |
|
| 5057076 |
eye spot |
Phyllosticta minima |
|
| 5057077 |
eye spot |
Phyllosticta minima |
|
| 5057079 |
eye spot |
Phyllosticta minima |
|
| 5057080 |
eye spot |
Phyllosticta minima |
|
| 5057082 |
eye spot |
Phyllosticta minima |
|
| 5057083 |
eye spot |
Phyllosticta minima |
|
| 5046017 |
oak wilt |
Ceratocystis fagacearum |
|
| 5046003 |
oak wilt |
Ceratocystis fagacearum |
tree with close-up of leaves |
| 5039095 |
oak wilt |
Ceratocystis fagacearum |
expanding oak wilt pocket |
| 5039096 |
oak wilt |
Ceratocystis fagacearum |
aerial photo with highlighted pockets of oak wilt |
| 5039097 |
oak wilt |
Ceratocystis fagacearum |
aerial photo- small pocket of wilt |
| 5039098 |
oak wilt |
Ceratocystis fagacearum |
|
| 5039099 |
oak wilt |
Ceratocystis fagacearum |
trees in July |
| 5039100 |
oak wilt |
Ceratocystis fagacearum |
same trees in image number 5039099 one month later- August |
| 5040002 |
oak wilt |
Ceratocystis fagacearum |
crown symptoms |
| 5040010 |
oak wilt |
Ceratocystis fagacearum |
grafted roots |
| 5035037 |
sudden oak death |
Phytophthora ramorum |
|
| 5035038 |
sudden oak death |
Phytophthora ramorum |
|
| 5035040 |
sudden oak death |
Phytophthora ramorum |
|
| 5035018 |
oak decline |
|
|
| 5039073 |
oak wilt |
Ceratocystis fagacearum |
oak wilt killed trees behind house |
| 5039074 |
oak wilt |
Ceratocystis fagacearum |
|
| 5039079 |
oak wilt |
Ceratocystis fagacearum |
oat wilt pocket in woodlot |
| 5039080 |
oak wilt |
Ceratocystis fagacearum |
leaf symptoms |
| 5039081 |
oak wilt |
Ceratocystis fagacearum |
|
| 5039047 |
oak decline |
|
|
| 5039048 |
oak decline |
|
|
| 5039050 |
nutrient deficiency |
|
chlorotic leaves |
| 5039063 |
oak wilt |
Ceratocystis fagacearum |
crack in bark |
| 5039064 |
oak wilt |
Ceratocystis fagacearum |
crown symptoms |
| 5039065 |
oak wilt |
Ceratocystis fagacearum |
crown symptoms and leaf casting |
| 5034094 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5034096 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5034097 |
oak decline |
|
|
| 5034098 |
oak decline |
|
|
| 5034100 |
oak decline |
|
|
| 5035001 |
oak decline |
|
|
| 5035003 |
oak decline |
|
|
| 5030040 |
Nectria canker |
Nectria spp. |
|
| 5045074 |
oak decline |
|
|
| 5045075 |
red oak borer |
Enaphalodes rufulus |
|
| 5045080 |
oak wilt |
Ceratocystis fagacearum |
crown symptoms |
| 5045081 |
oak wilt |
Ceratocystis fagacearum |
|
| 5045082 |
oak wilt |
Ceratocystis fagacearum |
oak wilt pocket |
| 5045083 |
oak wilt |
Ceratocystis fagacearum |
|
| 5039089 |
oak wilt |
Ceratocystis fagacearum |
wilting symptoms |
| 5039084 |
oak wilt |
Ceratocystis fagacearum |
sprout symptoms |
| 5056069 |
oak tatters |
|
|
| 5056070 |
oak tatters |
|
|
| 5056071 |
oak tatters |
|
|
| 5056016 |
Nectria canker |
Nectria spp. |
|
| 5056017 |
Nectria canker |
Nectria spp. |
|
| 5056018 |
Nectria canker |
Nectria spp. |
|
| 5056019 |
Nectria canker |
Nectria spp. |
|
| 5056020 |
Nectria canker |
Nectria spp. |
|
| 5056021 |
Nectria canker |
Nectria spp. |
|
| 5056022 |
Nectria canker |
Nectria spp. |
|
| 5056023 |
Nectria canker |
Nectria spp. |
|
| 5056024 |
Nectria canker |
Nectria spp. |
|
| 5056025 |
Nectria canker |
Nectria spp. |
|
| 5056026 |
Nectria canker |
Nectria spp. |
|
| 5056027 |
Nectria canker |
Nectria spp. |
|
| 5056044 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5056046 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5056050 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5056051 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5056052 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5056053 |
oak decline |
|
|
| 5056054 |
oak decline |
|
|
| 5056055 |
oak decline |
|
|
| 5056057 |
oak decline |
|
|
| 5053098 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
|
| 5053099 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
|
| 5053100 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
|
| 5054001 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
|
| 5054002 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
|
| 5054003 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
|
| 5054029 |
white rot |
Inonotus glomeratus |
|
| 5054046 |
iron deficiency |
|
iron chlorosis |
| 5054047 |
iron deficiency |
|
iron chlorosis |
| 5054048 |
iron deficiency |
|
iron chlorosis |
| 5054049 |
iron deficiency |
|
iron chlorosis |
| 5054052 |
iron deficiency |
|
iron chlorosis |
| 5054053 |
iron deficiency |
|
iron chlorosis |
| 5054054 |
iron deficiency |
|
iron chlorosis |
| 5054055 |
iron deficiency |
|
iron chlorosis |
| 5054056 |
iron deficiency |
|
iron chlorosis |
| 5054057 |
iron deficiency |
|
iron chlorosis |
| 5054058 |
iron deficiency |
|
iron chlorosis |
| 5054059 |
iron deficiency |
|
iron chlorosis |
| 5054060 |
iron deficiency |
|
iron chlorosis |
| 5054061 |
iron deficiency |
|
iron chlorosis |
| 5054062 |
iron deficiency |
|
iron chlorosis |
| 5055016 |
oak wilt |
Ceratocystis fagacearum |
|
| 5044024 |
sudden oak death |
Phytophthora ramorum |
ooze |
| 5048008 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 5048009 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 5047094 |
ash anthracnose |
Gnomoniella fraxini |
|
| 5047095 |
ash anthracnose |
Gnomoniella fraxini |
|
| 5047096 |
ash anthracnose |
Gnomoniella fraxini |
|
| 5047097 |
ash anthracnose |
Gnomoniella fraxini |
|
| 5047098 |
ash anthracnose |
Gnomoniella fraxini |
|
| 5047099 |
ash anthracnose |
Gnomoniella fraxini |
|
| 5047100 |
ash anthracnose |
Gnomoniella fraxini |
defoliation |
| 5048001 |
ash anthracnose |
Gnomoniella fraxini |
defoliation |
| 5049071 |
chestnut blight or canker |
Cryphonectria parasitica |
epicormic sprouts |
| 5049031 |
Blumeriella leaf spot of cherry and plum |
Blumeriella jaapii |
|
| 5049032 |
Blumeriella leaf spot of cherry and plum |
Blumeriella jaapii |
|
| 5047075 |
black knot |
Apiosporina morbosa |
|
| 5047076 |
black knot |
Apiosporina morbosa |
|
| 5047078 |
apple scab |
Venturia inaequalis |
|
| 5047079 |
apple scab |
Venturia inaequalis |
|
| 5047080 |
apple scab |
Venturia inaequalis |
|
| 5047081 |
apple scab |
Venturia inaequalis |
|
| 2180029 |
oak leaf blister |
Taphrina caerulescens |
|
| 2180030 |
oak leaf blister |
Taphrina caerulescens |
left leaf infected; right leaf healthy |
| 2180031 |
oak leaf blister |
Taphrina caerulescens |
|
| 5033075 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 5033081 |
Dutch elm disease |
Ophiostoma ulmi |
crown symptoms |
| 5033082 |
Dutch elm disease |
Ophiostoma ulmi |
branch symptoms |
| 5033083 |
Dutch elm disease |
Ophiostoma ulmi |
crown symptoms |
| 5033084 |
Dutch elm disease |
Ophiostoma ulmi |
crown symptoms |
| 5033085 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 5038038 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 5038044 |
Dutch elm disease |
Ophiostoma ulmi |
crown symptoms |
| 5038015 |
oak wilt |
Ceratocystis fagacearum |
staining in oak |
| 5038006 |
sudden oak death |
Phytophthora ramorum |
|
| 5037071 |
black knot |
Apiosporina morbosa |
on main stem |
| 5033016 |
Eutypella canker |
Eutypella parasitica |
basal canker |
| 5032070 |
American beech |
Fagus grandifolia |
|
| 5042095 |
black knot |
Apiosporina morbosa |
|
| 5043018 |
sudden oak death |
Phytophthora ramorum |
|
| 5043019 |
sudden oak death |
Phytophthora ramorum |
|
| 5043021 |
sudden oak death |
Phytophthora ramorum |
|
| 5043022 |
sudden oak death |
Phytophthora ramorum |
|
| 5043031 |
sudden oak death |
Phytophthora ramorum |
|
| 5043041 |
sudden oak death |
Phytophthora ramorum |
|
| 5005012 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
|
| 5005032 |
oak wilt |
Ceratocystis fagacearum |
|
| 5005033 |
oak wilt |
Ceratocystis fagacearum |
interveinal necrosis |
| 5005034 |
oak wilt |
Ceratocystis fagacearum |
veinal necrosis |
| 5005035 |
oak wilt |
Ceratocystis fagacearum |
interveinal chlorosis |
| 2110057 |
canker |
Valsa quaternata |
symptoms of infestation; fall 1998 |
| 2110060 |
violet root rot |
Helicobasidium brebissonii |
purple colored teleomorph at the root collar and the base of an oak seedling (after keeping moist); fall 1998 |
| 2110062 |
oak anthracnose |
Apiognomonia errabunda |
spots on infected leaves; May 2001 |
| 2110063 |
Marssonina leaf spot |
Marssonina salicicola |
necrotic lesions on willow twigs; June 2001 |
| 2110064 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
blotches on infected leaves; June 2001 |
| 2110077 |
Dutch elm disease |
Ophiostoma ulmi |
late-stage crown symptoms; May 1999 |
| 2110078 |
Dutch elm disease |
Ophiostoma ulmi |
dead trees with sprouts; July 1999 |
| 2110079 |
Dutch elm disease |
Ophiostoma ulmi |
branch symptoms; July 1999 |
| 2110080 |
Dutch elm disease |
Ophiostoma ulmi |
branch symptoms |
| 2110088 |
powdery mildew of oak |
Microsphaera alphitoides |
mycelium with cleistothecia (black dots) on a leaf |
| 2111010 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
blotches on infected leaves |
| 2111011 |
powdery mildew of oak |
Microsphaera alphitoides |
mycelium with cleistothecia (black dots) on a leaf |
| 2111018 |
Dutch elm disease |
Ophiostoma ulmi |
"branch symptoms (in the foreground)
and killed trees (in the background); July 1999" |
| 2111019 |
Dutch elm disease |
Ophiostoma ulmi |
vascular staining in the wood of an affected branch; 1996 |
| 2111039 |
Marssonina leaf spot |
Marssonina salicicola |
necrotic lesions on willow twigs; June 2001 |
| 2168057 |
wheat stem rust |
Puccinia graminis |
|
| 2168059 |
European mistletoe |
Viscum album |
|
| 2168061 |
European mistletoe |
Viscum album |
|
| 2168067 |
European mistletoe |
Viscum album |
|
| 2168068 |
European mistletoe |
Viscum album |
forested pasture near the city of Cluj-Napoca. Central Romania. |
| 2168053 |
wheat stem rust |
Puccinia graminis |
|
| 2168054 |
wheat stem rust |
Puccinia graminis |
|
| 2168055 |
wheat stem rust |
Puccinia graminis |
|
| 2139068 |
Melampsora rusts |
Melampsora spp. |
|
| 3570050 |
nutrient deficiency |
|
|
| 1467024 |
burl and decay |
|
February, 1979 |
| 2251067 |
white heartwood rot |
Phellinus tremulae |
decayed wood |
| 1399118 |
crown gall |
Rhizobium radiobacter |
|
| 1399116 |
Dothichiza canker |
Dothichiza populea |
bark canker |
| 1458013 |
oak wilt |
Ceratocystis fagacearum |
bark cracking form pressure cushion |
| 1470117 |
Phomopsis cankers and twig blights |
Phomopsis spp. |
|
| 1470020 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 2122022 |
aspen decline |
|
Sand Creek Basin, Colorado |
| 2122024 |
leaf scorches |
|
Aerial view of leaf scorch of quaking aspen, Colorado |
| 2122025 |
leaf scorches |
|
Leaf scorch on aspen foliage, South Park, CO |
| 2122026 |
leaf scorches |
|
|
| 1238010 |
root diseases and rots |
|
Greer, SC |
| 1397058 |
Armillaria root rots |
Armillaria spp. |
|
| 1397108 |
Armillaria root rots |
Armillaria spp. |
With extensive root and butt decay on golf course |
| 1427097 |
sudden oak death |
Phytophthora ramorum |
|
| 1293004 |
Phytophthora root and crown rots |
Phytophthora spp. |
Leaf spotting; Suspect leaf spots on Camellia must be tested in the lab to verify the presence of P. ramorum. |
| 1293005 |
Phytophthora root and crown rots |
Phytophthora spp. |
Leaf spotting; Suspect leaf spots on Camellia must be tested in the lab to verify the presence of P. ramorum. |
| 1293006 |
Phytophthora root and crown rots |
Phytophthora spp. |
Leaf spotting; Suspect leaf spots on Camellia must be tested in the lab to verify the presence of P. ramorum. |
| 1415273 |
Pestalotiopsis blight |
Pestalotiopsis quepinii |
Leaf necrosis |
| 1415258 |
Pestalotiopsis blight |
Pestalotiopsis quepinii |
Leaf necrosis. |
| 1415219 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Leaf necrosis on seedling. Sept. 21, 2003 |
| 1415229 |
Armillaria root rots |
Armillaria spp. |
Aug. 25, 2003 |
| 1415054 |
anthracnose |
Apiognomonia quercina |
Leave stalk necrosis. June 10, 2002 |
| 1415111 |
tracheomycosis |
|
July 23, 2002 |
| 1415147 |
gray mold |
Botrytis cinerea |
Aug. 26, 2002 |
| 1415149 |
blue stain fungi |
Ophiostoma spp. |
Acorn black rot. August 26, 2002 |
| 1415142 |
gray mold |
Botrytis cinerea |
Leaf necrosis on seedlings. Aug. 26, 2002 |
| 1396149 |
Nectria canker |
Nectria spp. |
|
| 1396132 |
sapstreak disease of sugar maple |
Ceratocystis coerulescens |
|
| 1406253 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406254 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406236 |
Hypoxylon cankers |
Hypoxylon spp. |
introduced at cicada wound site |
| 1406237 |
Hypoxylon cankers |
Hypoxylon spp. |
introduced at cicada wound site |
| 1406238 |
Hypoxylon cankers |
Hypoxylon spp. |
introduced at cicada wound site |
| 1406239 |
Hypoxylon cankers |
Hypoxylon spp. |
with hyphal pegs, two years after cicada wounds |
| 1406240 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406241 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406242 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406243 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406244 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406245 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406246 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406247 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406248 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406249 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406250 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 1406129 |
beech bark disease |
Nectria coccinea |
|
| 1406122 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406123 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406124 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406111 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406107 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406118 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406116 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406113 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1399069 |
Armillaria root rot |
Armillaria mellea |
Hazard tree |
| 1254083 |
hackberry witches' broom |
|
Witches brooms caused by a combination of a mite (Aceria celtis (Kendall, 1929)) and fungus (Sphaerotheca phytoptophila) on ornamental hackberry, Fort Collins, CO. |
| 1254084 |
hackberry witches' broom |
|
Tree heavily damaged by witches brooms caused by a combination of a mite (Aceria celtis (Kendall, 1929)) and fungus (Sphaerotheca phytoptophila), Fort Collins, CO. |
| 1198023 |
black knot |
Apiosporina morbosa |
|
| 0162017 |
bacterial spot of stone fruits |
Xanthomonas arboricola pv. pruni |
Angular, watersoaked spots on a plum leaf cv. Calita. |
| 0176077 |
Dutch elm disease |
Ophiostoma ulmi |
Elm shoots variously attacked by Dutch elm disease (Ophiostoma ulmi); note yellowing and browning of foliage and formation of crozier-like hooks at twig ends. |
| 0177045 |
Elm yellows |
Phytoplasma N/A |
Phloem discoloration in Ulmus americana, caused by elm phloem necrosis phytoplasma, close-up |
| 0162019 |
bacterial spot of stone fruits |
Xanthomonas arboricola pv. pruni |
Cankers on three plum branches cv. Calita |
| 0162020 |
bacterial spot of stone fruits |
Xanthomonas arboricola pv. pruni |
Stem cankers on plum cv. Calita after removal of the outer bark layer. |
| 0176039 |
Arabis Mosaic Virus |
Nepovirus ArMV |
Sambucus nigra (elder) with vein clearing due to arabis mosaic nepovirus. |
| 1371104 |
Pezicula fungus |
Pezicula cinnamomea |
Callusing rings. Göttingen, Germany |
| 1371016 |
Phytophthora root and crown rot |
Phytophthora cambivora |
Necrosis on the roots. Story, Germany |
| 1427100 |
sudden oak death |
Phytophthora ramorum |
Oak firewood for sale in Santa Clara, CA. |
| 1427108 |
sudden oak death |
Phytophthora ramorum |
Oak firewood for sale in Santa Clara, CA |
| 1427111 |
sudden oak death |
Phytophthora ramorum |
This leaf was confirmed as positive for P. ramorum by Jenny Davidson. |
| 1427076 |
sudden oak death |
Phytophthora ramorum |
Coast live oak dying from P. ramorum infection. |
| 1427087 |
sudden oak death |
Phytophthora ramorum |
P. ramorum symptoms on Rhododendron. Leaf was confirmed as infected with P. ramorum by Jenny Davidson. |
| 1427088 |
sudden oak death |
Phytophthora ramorum |
P. ramorum symptoms on Rhododendron. Upper leaf was confirmed as infected by Jenny Davidson. |
| 1427082 |
sudden oak death |
Phytophthora ramorum |
Coast live oak mortality at China Camp State Park, CA. |
| 1427084 |
sudden oak death |
Phytophthora ramorum |
Symptoms of P. ramorum on huckleberry. |
| 1427029 |
sudden oak death |
Phytophthora ramorum |
Jennifer Juzwik in the foreground.; China Camp State Park, California |
| 1371003 |
tinder fungus |
Fomes fomentarius |
longitudinal cracks. Story, Germany |
| 1247039 |
Dutch elm disease |
Ophiostoma ulmi |
Covington, GA. 1978. |
| 1247120 |
dogwood anthracnose |
Discula destructiva |
Canker and sprouting |
| 1247123 |
dogwood anthracnose |
Discula destructiva |
|
| 1247124 |
dogwood anthracnose |
Discula destructiva |
|
| 1247137 |
dogwood anthracnose |
Discula destructiva |
|
| 1247147 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
Barrow County, GA |
| 1247148 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
Barrow County, GA |
| 1361156 |
hispidus canker |
Inonotus hispidus |
large canker |
| 1361141 |
dogwood anthracnose |
Discula destructiva |
leaf spots and blotches |
| 1277119 |
bacterial canker of poplar |
Xanthomonas populi |
Infected trees in northern France |
| 1277120 |
bacterial canker of poplar |
Xanthomonas populi |
Infected trees in northern France |
| 1277124 |
bacterial canker of poplar |
Xanthomonas populi |
Artifically inoculated stem |
| 1254069 |
Dothichiza canker |
Dothichiza populea |
Dead crown due to canker infection, Fort Collins, CO. |
| 1254072 |
fire blight |
Erwinia amylovora |
Fort Collins, CO. |
| 1254073 |
fire blight |
Erwinia amylovora |
Shepherd's crook, Fort Collins, CO. |
| 1503068 |
Septoria leaf spot |
Septoria cornicola |
On dogwood berries |
| 1503069 |
Septoria leaf spot |
Septoria cornicola |
On dogwood berries |
| 1236067 |
dogwood anthracnose |
Discula destructiva |
|
| 1236068 |
dogwood anthracnose |
Discula destructiva |
|
| 1236188 |
mimosa wilt |
Fusarium oxysporum f.sp. perniciosum |
|
| 1325069 |
hackberry witches' broom |
|
a gall produced by the effect of an eriophyid mite (Aceria celtis (Kendall, 1929)) and powdery mildew (Sphaerotheca phytoptophila) |
| 2250024 |
Cytospora cankers |
Cytospora spp. |
canker on white poplar |
| 1223007 |
white muscadine disease |
Beauveria bassiana |
diseased larvae |
| 3943089 |
witches' broom |
|
|
| 3943012 |
Java black rot |
Lasiodiplodia theobromae |
Dead branch in. |
| 1442266 |
Cytospora canker |
Valsa sordida |
stem canker development |
| 1442047 |
Scleroderris canker of pine and spruce |
Gremmeniella abietina |
|
| 1427024 |
sudden oak death |
Phytophthora ramorum |
China Camp State Park, California |
| 1427025 |
sudden oak death |
Phytophthora ramorum |
China Camp State Park, California |
| 1427026 |
sudden oak death |
Phytophthora ramorum |
China Camp State Park, California |
| 1427027 |
sudden oak death |
Phytophthora ramorum |
China Camp State Park, California |
| 1427007 |
sudden oak death |
Phytophthora ramorum |
|
| 1427008 |
sudden oak death |
Phytophthora ramorum |
|
| 1427009 |
sudden oak death |
Phytophthora ramorum |
|
| 3943013 |
Java black rot |
Lasiodiplodia theobromae |
Gummosis and canker associated with fungus infection |
| 2666002 |
zonate leaf spot |
Grovesinia pyramidalis |
early symptoms begins as small gray to light brown spots on the leaflets |
| 4825027 |
Neonectria canker |
Neonectria galligena |
Hypertrophied bark in crown. |
| 4822050 |
bacterial leaf scorch |
Xylella fastidiosa |
Early leaf symptoms development of Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. |
| 4822062 |
ash rusts |
Puccinia sparganioides |
Leaf distortion, petiole hypertrophy and distinctive pycnia and aecial "cluster cup" with orange-yellow aeciospores proliferating from the surface of infected tissue. |
| 4824074 |
Botryosphaeria canker |
Botryosphaeria dothidea |
Infected seedlings with dark fruiting bodies on lower stem/root-collar (three seedlings on right), uninfected (three seedlings on left). |
| 4824082 |
Phytophthora root and crown rots |
Phytophthora spp. |
Infected roots growing in poorly drained nursery beds. |
| 4824083 |
false tinder polypore |
Phellinus igniarius |
And Pythium root disease on seedlings grown in poorly drained nursery beds. |
| 4824084 |
Cylindrocladium root diseases |
Cylindrocladium spp. |
Black microsclerotia fruiting bodies on the roots of infected seedlings. |
| 4824085 |
Cylindrocladium root diseases |
Cylindrocladium spp. |
Black microsclerotia fruiting bodies on the roots of infected seedlings. |
| 4824086 |
Pythium diseases |
Pythium spp. |
Scorched leaves of infected seedlings. |
| 4824087 |
charcoal rot |
Macrophomina phaseolina |
Marginal leaf necrosis. |
| 4824088 |
root-knot nematode |
Meloidogyne incognita |
Galls on roots of parasitized seedling. |
| 4824100 |
Cylindrocladium blight and root rot |
Cylindrocladium scoparium |
Girdling stem canker on infected seedlings. (see image 4824099). |
| 4825003 |
heat |
|
Heat lesions girdling lower stem. Note swelling of stem above lesions resulting from obstructed flow of carbohydrates through damaged phloem. |
| 4825006 |
eucalyptus canker |
Cryphonectria cubensis |
Healthy stem, contrast to infected stem (image 4825007). |
| 4825007 |
eucalyptus canker |
Cryphonectria cubensis |
Bark fissures starting at base of infected tree. Compare with healkthy stem (image 4825006). C. cubensis inhibits coppice ability of infected trees. |
| 4825008 |
eucalyptus canker |
Cryphonectria cubensis |
Initial infection beneath bark. |
| 4825009 |
eucalyptus canker |
Cryphonectria cubensis |
Advanced bark fissuring from infection which reduces coppice ability. |
| 4825010 |
eucalyptus canker |
Cryphonectria cubensis |
Bark fissuring as canker develops which reduces coppice ability. |
| 4825011 |
eucalyptus canker |
Cryphonectria cubensis |
Advanced canker development. |
| 4825013 |
eucalyptus canker |
Cryphonectria cubensis |
Failure of 2-year old coppice shoots on infected stump. |
| 4825014 |
eucalyptus canker |
Cryphonectria cubensis |
Infected stump with dying coppice shoots. |
| 4825015 |
eucalyptus canker |
Cryphonectria cubensis |
Bark fissures on mature tree. |
| 2733034 |
Dutch elm disease |
Ophiostoma ulmi |
small stem split to show vascular discoloration. |
| 4166015 |
witches' broom |
|
in east Africa |
| 3047003 |
weeping conk |
Inonotus dryadeus |
at base |
| 3047018 |
weeping conk |
Inonotus dryadeus |
|
| 2912093 |
oak wilt |
Ceratocystis fagacearum |
on leaf. Near San Antonio, Texas during Southern Forest Insect Work Conference Field Trip. |
| 4213005 |
fire blight |
Erwinia amylovora |
shoot dieback |
| 4213069 |
Neonectria canker |
Neonectria galligena |
|
| 4213070 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
discoloration on stem |
| 2252018 |
Irpex canker |
Spongipellis pachyodon |
cross-section of canker showing decayed wood |
| 2252012 |
Septoria leaf spot and cankers |
Septoria spp. |
shoot canker |
| 2251099 |
Verticillium wilt |
Verticillium albo atrum |
crown with wilt symptoms |
| 3227028 |
Dutch elm disease |
Ophiostoma ulmi |
with bark peeled showing cambuim streaking |
| 3227029 |
Dutch elm disease |
Ophiostoma ulmi |
cut stems showing staining |
| 4215051 |
Cryptosphaeria cankers |
Cryptosphaeria spp. |
one of the unusual ascomycetes that can decay wood |
| 4215017 |
clinker polypore |
Inonotus obliquus |
diseased paper birch |
| 4215046 |
bacterial wetwood |
Enterobacter nimipressuralis |
elm with active ooze (upper) & discoloration of bark |
| 4215047 |
Dutch elm disease |
Ophiostoma ulmi |
vascular staining |
| 2252008 |
oak wilt |
Ceratocystis fagacearum |
bark crack over fungal mat |
| 2252005 |
oak wilt |
Ceratocystis fagacearum |
vascular streaking |
| 2250023 |
canker and die back of Siberian Elm |
Tubercularia ulmea |
on Siberian elm |
| 0796080 |
slime mold |
|
on dogwood |
| 0488108 |
Dutch elm disease |
Ophiostoma ulmi |
|
| 0590025 |
Eutypella canker |
Eutypella parasitica |
distinctive canker common on maple |
| 0590026 |
galls |
|
unknown etiology; caused by bact./virus/mycoplasma |
| 0590027 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
|
| 0590032 |
Neonectria cankers |
Neonectria spp. |
|
| 0590038 |
basal cankers |
|
often initiated by fire injury |
| 0590007 |
Neonectria canker |
Neonectria galligena |
|
| 0590008 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
debarked canker |
| 0590009 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
large canker |
| 0590010 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
crown dieback |
| 0590011 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 0590013 |
chestnut blight or canker |
Cryphonectria parasitica |
canker |
| 0590015 |
sycamore anthracnose |
Apiognomonia veneta |
canker on branch |
| 0590016 |
Neonectria cankers |
Neonectria spp. |
|
| 0364036 |
anthracnose |
Colletotrichum acutatum |
leaf spot symptoms |
| 0364037 |
anthracnose |
Colletotrichum acutatum |
leaf blight symptoms |
| 0355023 |
sycamore anthracnose |
Apiognomonia veneta |
on twigs |
| 0355030 |
Armillaria root rots |
Armillaria spp. |
decayed wood present in butt of tree |
| 0355034 |
mimosa wilt |
Fusarium oxysporum f.sp. perniciosum |
discoloration in stumps |
| 0355035 |
mimosa wilt |
Fusarium oxysporum f.sp. perniciosum |
wilt symptoms |
| 0355037 |
Verticillium wilts |
Verticillium spp. |
streaking on maple branch with bark removed |
| 0355038 |
oak wilt |
Ceratocystis fagacearum |
leaf symptoms |
| 0364002 |
tar spots |
Rhytisma spp. |
closeup view of leaf damage |
| 0364003 |
Venturia leaf scabs and blights |
Venturia spp. |
infected leaves |
| 0364004 |
oak leaf blister |
Taphrina caerulescens |
close-up view of blisters |
