| 1573856 |
early blight |
Alternaria solani |
Close up of diseased leaves. September 1997 |
| 1573855 |
early blight |
Alternaria solani |
Close up of diseased leaves. September 1997 |
| 1573851 |
early blight |
Alternaria solani |
Close up of leaf with initial symptoms. September 1997 |
| 1603000 |
powdery mildew |
Erysiphe spp. |
|
| 5494888 |
downy mildew |
Plasmopara obducens |
Plasmopara obduscens sporangia |
| 5492698 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5492697 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5492706 |
needle rust |
Pucciniastrum goeppertianum |
witches broom in prune field |
| 5492707 |
needle rust |
Pucciniastrum goeppertianum |
|
| 5486239 |
aster yellows phytoplasma |
Candidatus Phytoplasma asteris |
|
| 5488226 |
Pestalotiopsis leaf spot |
Pestalotiopsis spp. |
Symptomatic infected foliage |
| 5492233 |
green algae |
Cephaleuros spp. |
Algal spots on the leaf |
| 5492257 |
late blight |
Phytophthora infestans |
diseased leaf |
| 5492258 |
late blight |
Phytophthora infestans |
diseased leaf |
| 5487909 |
iris leaf spot |
Davidiella macrospora |
leaf spots and blight |
| 5487911 |
iris leaf spot |
Davidiella macrospora |
leaf spots and blight |
| 5487912 |
iris leaf spot |
Davidiella macrospora |
leaf spots and blight |
| 5411358 |
black spot of elm |
Stegophora ulmea |
leaf spots |
| 5487856 |
downy mildew |
Peronospora sparsa |
Rubus argutus 'Black Satin'
Sporangiophore and sporangia |
| 5487854 |
downy mildew |
Peronospora sparsa |
Rubus argutus 'Black Satin'
sporangia and sporangiophores |
| 5487929 |
powdery mildew |
Oidium spp. |
powdery mildew on leaves |
| 5487928 |
powdery mildew |
Oidium spp. |
leaf necrosis |
| 5487897 |
powdery mildew |
Oidium spp. |
off color foliage |
| 5487899 |
powdery mildew |
Oidium spp. |
off color foliage |
| 5487896 |
powdery mildew |
Oidium spp. |
off color foliage |
| 5488257 |
pine needle rusts |
Coleosporium spp. |
Vertical section of aecium |
| 1524017 |
Southern corn leaf blight and stalk rot |
Bipolaris maydis |
|
| 5486896 |
Ascochyta fungi |
Ascochyta spp. |
|
| 5481791 |
anthracnose |
Colletotrichum orbiculare |
|
| 5485059 |
wheat stem rust |
Puccinia graminis |
Poa pratensis 'Langara' |
| 5485060 |
wheat stem rust |
Puccinia graminis |
Poa pratensis 'Langara' |
| 5485062 |
wheat stem rust |
Puccinia graminis |
Poa pratensis 'Langara' |
| 5483128 |
Philippine downy mildew |
Peronosclerospora philippinensis |
|
| 5483126 |
Philippine downy mildew |
Peronosclerospora philippinensis |
|
| 5483127 |
Philippine downy mildew |
Peronosclerospora philippinensis |
|
| 5479899 |
late blight |
Phytophthora infestans |
fruit lesions |
| 5479903 |
powdery mildew |
Oidium spp. |
Powdery mildew |
| 5479850 |
late blight |
Phytophthora infestans |
Sporangiophore |
| 5479866 |
late blight |
Phytophthora infestans |
Sporangiophore with sporangia attached |
| 5482226 |
Impatiens Necrotic Spot Virus |
Tospovirus INSV |
|
| 5479906 |
powdery mildew |
Oidium spp. |
Powdery MildewCultivar is 'Franz Schubert' |
| 5479907 |
powdery mildew |
Oidium spp. |
Powdery MildewCultivar is 'Franz Schubert' |
| 5475219 |
excessive water uptake |
|
Trunk splitting caused by excessive water uptake. |
| 1568029 |
late blight |
Phytophthora infestans |
|
| 1568030 |
late blight |
Phytophthora infestans |
|
| 1568032 |
late blight |
Phytophthora infestans |
|
| 1568034 |
late blight |
Phytophthora infestans |
|
| 1568035 |
late blight |
Phytophthora infestans |
|
| 1568085 |
angular leaf spot of strawberry |
Xanthomonas fragariae |
|
| 5475323 |
bitter leaf |
Ceratocystis paradoxa |
The trunk of this coconut was just beginning to exhibit "stem bleeding", but the large rusty-brown area at the top was already soft. |
| 5475322 |
bitter leaf |
Ceratocystis paradoxa |
An example of "stem bleeding" on a coconut trunk. The top of the blackened area was very soft and could be easily pushed in with the fingers. |
| 5445852 |
green alga |
Cephaleuros virescens |
|
| 5458609 |
basil downy mildew |
Peronospora belbahrii |
Infected plant |
| 5458610 |
basil downy mildew |
Peronospora belbahrii |
Infected plant |
| 1572015 |
Stemphylium leaf blight and stalk rot |
Stemphylium vesicarium |
|
| 5402331 |
peach leaf curl |
Taphrina deformans |
|
| 5402332 |
peach leaf curl |
Taphrina deformans |
|
| 5402329 |
peach leaf curl |
Taphrina deformans |
|
| 5402330 |
peach leaf curl |
Taphrina deformans |
|
| 5465833 |
Septoria leaf spot |
Septoria glycines |
|
| 5465834 |
Septoria leaf spot |
Septoria glycines |
|
| 1570891 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Alternaria as secondary invader of kale stem tissue. Primary cause not known. November 1994 |
| 5470380 |
late blight |
Phytophthora infestans |
Sporulation of the pathogen, Phytophthora infestans, visible on the underside of the leaflet. |
| 5470094 |
soybean rust |
Phakopsora pachyrhizi |
|
| 5470097 |
soybean rust |
Phakopsora pachyrhizi |
|
| 5470116 |
soybean rust |
Phakopsora pachyrhizi |
|
| 5470104 |
soybean rust |
Phakopsora pachyrhizi |
|
| 5470102 |
soybean rust |
Phakopsora pachyrhizi |
|
| 5470098 |
soybean rust |
Phakopsora pachyrhizi |
|
| 5470073 |
soybean rust |
Phakopsora pachyrhizi |
|
| 5469600 |
anthracnose |
Colletotrichum truncatum |
|
| 5468287 |
ink spot leaf blight |
Ciborinia whetzelii |
|
| 5465595 |
downy mildew |
Sclerophthora macrospora |
|
| 5465592 |
downy mildew |
Sclerophthora macrospora |
|
| 5465594 |
downy mildew |
Sclerophthora macrospora |
|
| 5465591 |
downy mildew |
Sclerophthora macrospora |
|
| 5465584 |
downy mildew |
Sclerophthora macrospora |
|
| 5465585 |
downy mildew |
Sclerophthora macrospora |
|
| 5465586 |
downy mildew |
Sclerophthora macrospora |
|
| 5465587 |
downy mildew |
Sclerophthora macrospora |
|
| 5465583 |
downy mildew |
Sclerophthora macrospora |
|
| 5465581 |
downy mildew |
Sclerophthora macrospora |
|
| 5465565 |
common corn rust |
Puccinia sorghi |
|
| 5458683 |
orange rust |
Arthuriomyces peckianus |
Black raspberry infected with the Orange Rust fungus Arthuriomyces peckianus and exhibiting numerous bright orange pustules developing on the undersides of leaves. |
| 5458382 |
rust |
Puccinia pelargonii-zonalis |
Foliar lesions as viewed on underside of infected leaf. |
| 5458636 |
Rhabdocline needlecast |
Rhabdocline weirii |
Rhabdocline apothecia are released when flaps of leaf epidermis fold back on either side of the midrib. |
| 5458104 |
mycelial neck rot |
Botrytis tulipae |
Dieback of leaf tips and neck rot, with dark fungal sclerotia present on rotted tissue of the bulb. |
| 5458093 |
mycelial neck rot |
Botrytis tulipae |
Tulip Fire: foliar symptoms caused by Botrytis tulipae. |
| 1415187 |
fir-fireweed rust |
Pucciniastrum epilobii |
June 20, 2003 |
| 1415227 |
fir-fireweed rust |
Pucciniastrum epilobii |
Aug. 8, 2003 |
| 1406019 |
Diplodia blight |
Sphaeropsis sapinea |
stem canker |
| 1241641 |
red belt abiotic damage |
|
The outer foliage is generally most damaged. |
| 1571367 |
powdery mildew |
Podosphaera xanthii |
Watermelon leaf showing an even distribution of powdery mildew (Podosphaera xanthii) over the entire leaf surface. June 1995 |
| 5427708 |
Kabatina blight |
Kabatina juniperi |
Terminal dieback of arborvitae due to Kabatina juniperi |
| 5427730 |
Kabatina blight |
Kabatina juniperi |
Death of juniper branch tip due to Kabatina juniperi |
| 5427731 |
Kabatina blight |
Kabatina juniperi |
Fruiting bodies of Kabatina juniperi present at the base of infected juniper twig |
| 0485002 |
Ploioderma needle cast of pine |
Ploioderma lethale |
advanced symptoms |
| 1467361 |
Elytroderma needle cast of pine |
Elytroderma deformans |
|
| 5427716 |
Marssonina leaf spots |
Marssonina spp. |
Marssonina leaf spot symptoms on bittersweet leaf |
| 0355049 |
pine needle rusts |
Coleosporium spp. |
|
| 5408684 |
Impatiens Necrotic Spot Virus |
Tospovirus INSV |
Ringspots, stem lesions
Pathogen type: Virus |
| 5408695 |
downy mildew |
Peronospora phlogina |
Leaf necrosis
Pathogen type: Fungus |
| 5443108 |
rust |
Puccinia punctiformis |
Young shoots emerge with undersides of leaves and stem covered in pycnia which are later replaced with uredinia and telia |
| 5440254 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5440255 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 1406112 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 2251058 |
pine needle cast |
Lophodermium pinastri |
severe infection |
| 0364032 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
light damage on longleaf pine |
| 0364010 |
oak anthracnose |
Apiognomonia errabunda |
leaf symptoms |
| 0364018 |
Sirococcus blight of conifers |
Sirococcus conigenus |
tip dieback on red pine |
| 0364007 |
poplar rust |
Melampsora medusae |
on cottonwood |
| 0364014 |
Rhabdocline needlecasts |
Rhabdocline spp. |
symptoms on blue spruce |
| 0176071 |
mal secco |
Phoma tracheiphila |
Lemon tree (Citrus limon) infected by mal secco. |
| 0162073 |
Arabis Mosaic Virus |
Nepovirus ArMV |
on grapevine |
| 0162031 |
leaf streak/black chaff |
Xanthomonas translucens pv. translucens |
Close-up of symptoms caused on flag leaves of a susceptible soft red winter wheat (cv. FFR 525W) at watery-ripe stage. Leaf lesions generally appear as short necrotic streaks unless they coalesce into larger necrotic areas. |
| 0162032 |
leaf streak/black chaff |
Xanthomonas translucens pv. translucens |
watery-ripe stage |
| 0162003 |
pear decline phytoplasma |
Candidatus Phytoplasma pyri |
Nursery of 1 year-old pear trees (cv. Butirra Precoce Morettini). In the center: pear decline infected trees showing reddening of the leaves; healthy trees on left and right. |
| 0162005 |
pear decline phytoplasma |
Candidatus Phytoplasma pyri |
Three year-old Conference pear tree grafted on Quince A affected by pear decline showing premature yellow-reddish leaf coloration. |
| 1262029 |
citrus canker |
Xanthomonas citri |
Whole leaf symptoms on top and bottom of grapefruit leaves. |
| 1406106 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1399112 |
shepherd's crook leaf and shoot blight |
Venturia populina |
|
| 1355039 |
gray leaf spot |
Magnaporthe grisea |
Lesions on rice plant leaves. |
| 0364029 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
light infection on seedling in foreground, healthy seeding in background |
| 5439527 |
angular leaf spot of cotton |
Xanthomonas citri ssp. malvacearum |
Xanthomonas axonopodis pv. malvacearum |
| 1415053 |
anthracnose |
Apiognomonia quercina |
leave stalk necrosis. June 10, 2002 |
| 1415110 |
tracheomycosis |
|
July 23, 2002 |
| 1406007 |
pine needle rust |
Coleosporium asterum |
|
| 1467040 |
Gynosporanium rusts |
Gymnosporangium spp. |
|
| 5440188 |
soybean rust |
Phakopsora pachyrhizi |
Range of soybean rust symptoms on soybean leaves |
| 5440187 |
soybean rust |
Phakopsora pachyrhizi |
Range of soybean rust symptoms on soybean leaves. |
| 1467378 |
Medusa needle blight |
Davisomycella medusa |
|
| 0454068 |
pear decline phytoplasma |
Candidatus Phytoplasma pyri |
Pear tree showing severe symptoms of decline due to pear decline phytoplasma. |
| 1467386 |
white pine needlecast |
Lophodermella arcuata |
|
| 1467381 |
Medusa needle blight |
Davisomycella medusa |
|
| 5439440 |
downy mildew |
Peronospora sparsa |
Downy mildew symptoms on Knock-out rose, Rosa spp. 'Radtko'. |
| 1371050 |
Diplodia blight |
Sphaeropsis sapinea |
Shoot dieback. Filakovo, Slovakia |
| 2251054 |
lodgepole pine needle cast |
Lophodermella concolor |
symptomatic tree |
| 1406126 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 1406022 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 1406038 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 1467365 |
Elytroderma needle cast of pine |
Elytroderma deformans |
|
| 4212092 |
tar spot needlecast |
Davisomycella ampla |
heavy infection |
| 1436157 |
iris leaf spot |
Davidiella macrospora |
|
| 2251074 |
Marssonina blight of poplar |
Marssonina populi |
infected aspen leaves |
| 1400009 |
Diplodia blight |
Sphaeropsis sapinea |
Following tornado damage, Upper Peninsula, Michigan. |
| 1400010 |
Diplodia blight |
Sphaeropsis sapinea |
Following tornado damage in Upper Peninsula of Michigan. See image 1400011 for cut away view. |
| 0162004 |
pear decline phytoplasma |
Candidatus Phytoplasma pyri |
Three year-old Conference pear tree grafted on Quince A affected by pear decline showing premature yellow-reddish leaf coloration. |
| 1400142 |
Septoria leaf spot and cankers |
Septoria spp. |
On a susceptible clone of hybrid poplar. |
| 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 |
| 4822078 |
Phytophthora basal canker |
Phytophthora palmivora |
Droplets of discolored sap exuding from infected bark tissues. |
| 4178020 |
pine needle cast |
Lophodermella cerina |
infected needles in Loblolly pine crown |
| 5436433 |
black Sigatoka disease |
Mycosphaerella fijiensis |
|
| 1415102 |
Herpotrichia fungi |
Herpotrichia spp. |
July 23, 2002 |
| 4822077 |
Phytophthora basal canker |
Phytophthora palmivora |
Basal canker (6 feet off the ground) with dark staining and discoloration of infected bark. Naples, Florida, USA |
| 1436166 |
bean rust |
Uromyces phaseoli var. typica |
|
| 5436334 |
bakanae of rice |
Fusarium fujikuroi |
Bakanae (Fusarium fugikurai)infected plant showing root initiation from affected node. |
| 1399085 |
needle blight of larch |
Meria laricis |
|
| 1241575 |
fir needle cast |
Isthmiella abietis |
Fruiting bodies (hysterothecia) of Isthmiella abietis (needle cast) on midrib of subalpine fir needles. |
| 1415092 |
pine needle cast |
Lophodermium pinastri |
Needlecast. July 16, 2002 |
| 1415115 |
Marssonina leaf spot |
Marssonina juglandis |
Nut necrosis. July 26, 2002 |
| 1415015 |
pine needle cast |
Lophodermium pinastri |
May 2, 2005 |
| 5436333 |
bakanae of rice |
Fusarium fujikuroi |
Rice field with Bakanae (Fusarium fugikurai) infected plant |
| 1312018 |
Diplodia blight |
Sphaeropsis sapinea |
Bark was cut away to reveal resinosis and staining in the wood. |
| 1467408 |
brown felt blight |
Herpotrichia juniperi |
|
| 0162090 |
Satsuma Dwarf Virus |
Sadwavirus SDV |
Boat and spoon-shaped malformed leaves of satsuma mandarin trees affected with the necrotic strain of satsuma dwarf virus. |
| 4213001 |
pine needle rusts |
Coleosporium spp. |
close-up view of aecia spore masses |
| 4178019 |
pine needle cast |
Lophodermella cerina |
on loblolly pine; Camp Livingston 85 |
| 1241612 |
lodgepole pine needle cast |
Lophodermella concolor |
Lophodermella concolor turns needles bright red-brown just before bud break in the spring. |
| 4212098 |
Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
general view showing typical pattern and color |
| 1467366 |
Elytroderma needle cast of pine |
Elytroderma deformans |
|
| 4213007 |
Sirococcus blight of conifers |
Sirococcus conigenus |
typical needle drop |
| 0162009 |
pear decline phytoplasma |
Candidatus Phytoplasma pyri |
Pear tree cv. Abate Fetel grafted on quince C affected by pear decline showing abnormal and early red leaf discoloration. |
| 0364023 |
Dothistroma needle blight |
Mycosphaerella pini |
infected needles on Austrian pine |
| 2652001 |
large-spored spruce-laborador tea/needle rust |
Chrysomyxa ledicola |
in coastal Alaska |
| 0176003 |
Tomato Black Ring Virus |
Nepovirus TBRV |
Symptoms of tomato black ring nepovirus on grapevine. |
| 1436171 |
anthracnose |
Colletotrichum spp. |
|
| 1436168 |
anthracnose |
Colletotrichum truncatum |
|
| 4213004 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
|
| 2652012 |
spruce needle cast/blight |
Lirula macrospora |
in southeast Alaska |
| 2251048 |
Dothistroma needle blight |
Mycosphaerella pini |
infected needles on ponderosa pine |
| 0162002 |
pear decline phytoplasma |
Candidatus Phytoplasma pyri |
William pear tree grafted on Kirchensaller showing the 'quick decline' form of pear decline phytoplasma. |
| 4544091 |
needlecast |
Meloderma desmazieri |
|
| 1312019 |
Diplodia blight |
Sphaeropsis sapinea |
Redish-brown needles are current year's infections. Gray needles are from previous year's infections. |
| 4178006 |
pine needle cast |
Lophodermella cerina |
Loblolly pine, Camp Livingston |
| 1415218 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Leaf necrosis on seedling. Sept. 21, 2003 |
| 0162010 |
pear decline phytoplasma |
Candidatus Phytoplasma pyri |
Pear tree cv. Abate Fetel grafted on quince BA29 affected by pear decline. |
| 1400173 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 5435907 |
rush skeletonweed rust |
Puccinia chondrillina |
rust pathogen on stem |
| 5435908 |
rush skeletonweed rust |
Puccinia chondrillina |
rust pathogen on stem, note lateral stems have died |
| 1415116 |
Marssonina leaf spot |
Marssonina juglandis |
Leaf necrosis. July 26, 2002 |
| 1415223 |
Pleuroceras fungus |
Pleuroceras pseudoplatani |
August 8, 2003 |
| 1436044 |
blue mold |
Peronospora tabacina |
on upper leaf surface of seedling |
| 1436014 |
anthracnose |
Colletotrichum truncatum |
|
| 0162007 |
pear decline phytoplasma |
Candidatus Phytoplasma pyri |
Pear tree cv. Abate Fetel grafted on quince BA29 affected by pear decline showing little terminal growth with sparse ligth green and slightly rolled leaves (spring symptoms). |
| 1400011 |
Diplodia blight |
Sphaeropsis sapinea |
Bark cut away from canker (see image 1400010) to show necrosis of cambium due to diplodia blight. |
| 1406059 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 0656032 |
Cherry Little Cherry Virus |
|
Reddening of the leaves of the indicator Canindex 1 (Prunus avium) after infection with little cherry disease, healthy control plants in the rear. |
| 5435619 |
late blight |
Phytophthora infestans |
infested fruits |
| 5435618 |
late blight |
Phytophthora infestans |
symptomatic stem |
| 0162012 |
pear decline phytoplasma |
Candidatus Phytoplasma pyri |
Japanese pear (nashi) cv. Hosui showing enlarged vein with leaf curl induced by pear decline. |
| 0454062 |
grapevine flavescence dorée phytoplasma |
Phytoplasma N/A |
Symptoms of late infection of grape by grapevine flavescence dorée phytoplasma, showing brown, shrivelled fruits. |
| 2251046 |
Elytroderma needle cast of pine |
Elytroderma deformans |
symptomatic needles and upturned branches |
| 0162094 |
Satsuma Dwarf Virus |
Sadwavirus SDV |
Boat and spoon-shaped malformed leaves of satsuma mandarin trees affected with the necrotic strain of satsuma dwarf virus. |
| 1406192 |
Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
|
| 0162074 |
Cherry Rasp Leaf Virus |
Nepovirus CRLV |
Symptoms of cherry rasp leaf nepovirus infection in apple; healthy right affected left |
| 0176047 |
Dothistroma needle blight |
Mycosphaerella pini |
showing infection of both young and old foliage. |
| 1415188 |
fir-fireweed rust |
Pucciniastrum epilobii |
June 20, 2003 |
| 0162006 |
pear decline phytoplasma |
Candidatus Phytoplasma pyri |
Pear tree cv. Abate Fetel grafted on quince BA29 affected by pear decline showing little terminal growth with sparse light green and slightly rolled leaves (spring symptoms). |
| 0355050 |
pine needle rusts |
Coleosporium spp. |
close-up view on aecia |
| 0162039 |
bacterial leaf blight of rice |
Xanthomonas oryzae pv. oryzae |
Mature rice plants infected. Lesions begins as water-soaked stripes on the leaf blades and eventually would increase in length and width becoming yellow to grayish-white until the entire leaf dries up. |
| 2652014 |
spruce needle rust |
Chrysomyxa weirii |
small infections in southeast Alaska |
| 1406032 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 0534023 |
Chrysomyxa rust of spruce |
Chrysomyxa ledi |
aecia on needles |
| 1241566 |
Rhabdocline needlecasts |
Rhabdocline spp. |
Rhabdocline apothecia are released when flaps of leaf epidermis fold back on either side of the midrib. |
| 1415132 |
Diplodia blight |
Sphaeropsis sapinea |
Aug. 12, 2002 |
| 1473151 |
lodgepole pine needle cast |
Lophodermella concolor |
6/1/1966 Larimer Co., Colorado |
| 5372079 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5372084 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5372370 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5372382 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5372371 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5372406 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5372080 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5372078 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5372350 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5372351 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5372405 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5372400 |
green alga |
Cephaleuros virescens |
stem infection |
| 5372401 |
green alga |
Cephaleuros virescens |
stem infection |
| 5372403 |
green alga |
Cephaleuros virescens |
stem infection |
| 5372404 |
green alga |
Cephaleuros virescens |
stem infection |
| 5372397 |
green alga |
Cephaleuros virescens |
stem infection |
| 5372398 |
green alga |
Cephaleuros virescens |
stem infection |
| 5372399 |
green alga |
Cephaleuros virescens |
stem infection |
| 1406063 |
Lophodermium needle casts |
Lophodermium spp. |
|
| 3035067 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
infection on older needles |
| 5427709 |
Alternaria blight |
Alternaria zinniae |
Small reddish brown spots with grayish centers typical of Alternaria leaf blight on zinnia |
| 5427720 |
leaf spot |
Ceratobasidium stevensii |
Rhizomorphs and sclerotia of the thread blight organism on a cotoneaster branch. |
| 1241616 |
pine needle cast |
Lophodermium nitens |
Lophodermium nitens has caused severe defoliation in this western white pine. |
| 4449033 |
leaf blister of birch |
Taphrina betulina |
|
| 5261034 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 1312017 |
Diplodia blight |
Sphaeropsis sapinea |
Heavily diseased with Diplodia Blight. |
| 1406085 |
Diplodia blight |
Sphaeropsis sapinea |
dead trees |
| 1406036 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 1241588 |
needle blight of larch |
Meria laricis |
Larch needle cast causes yellow spots which become red-brown, begins infecting emerging needles in the spring, and can continue to reinfect as long as rainfall creates suitable conditions. |
| 5418739 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Sooty mold symptoms on wheat head |
| 5418703 |
Septoria leaf spot of wheat |
Septoria tritici |
Leaf symptoms of septoria |
| 5418744 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Sooty mold symptoms on wheat head |
| 0176041 |
Arabis Mosaic Virus |
Nepovirus ArMV |
Hop with "nettlehead" due to arabis mosaic nepovirus. |
| 1198036 |
Diplodia blight |
Sphaeropsis sapinea |
Hail-initiated shoot blight in large trees. |
| 1436153 |
leaf spot or scorch |
Septoria azalea |
|
| 0541047 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 1415167 |
Douglas-fir needlecast |
Rhabdocline pseudotsugae |
April 30, 2003 |
| 5430056 |
peach leaf curl |
Taphrina deformans |
Whole peach tree with many leaves with the disease Peach leaf curl |
| 0534021 |
Chrysomyxa rust of spruce |
Chrysomyxa ledi |
|
| 1406109 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 0176004 |
Tomato Black Ring Virus |
Nepovirus TBRV |
Symptoms of tomato black ring nepovirus on grapevine. |
| 1371053 |
Dothistroma needle blight |
Mycosphaerella pini |
Infection moving from older to younger needles. Filakovo, Slovakia |
| 0364030 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
close-up view of infected needles |
| 1406030 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 1241609 |
Dothistroma needle blight |
Mycosphaerella pini |
Mycosphaerella needle blight on a ponderosa pine sapling. |
| 4212094 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
infected needles |
| 1406062 |
pine needle cast |
Lophodermium pinastri |
|
| 1406029 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 1406060 |
Lophodermium needle casts |
Lophodermium spp. |
|
| 4212095 |
Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
general view showing typical pattern and color |
| 2733028 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
severe infection of grass stage seedling |
| 1406191 |
Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
|
| 1406058 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 3035068 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
infection on older needles |
| 2251033 |
larch needle cast |
Hypodermella laricis |
symptomatic needles |
| 2139067 |
Marssonina leaf spot |
Marssonina tiliae |
|
| 1406042 |
Sirococcus blight of conifers |
Sirococcus conigenus |
Superior National Forest |
| 1406061 |
pine needle cast |
Lophodermium pinastri |
|
| 0590048 |
dogwood anthracnose |
Discula destructiva |
|
| 0590050 |
dogwood anthracnose |
Discula destructiva |
shoot dieback |
| 0162081 |
Peach Rosette Mosaic Virus |
Nepovirus PRMV |
|
| 1371049 |
Phacidium fungus |
Phacidium coniferarum |
Canker on twig. Nemecká, Slovakia |
| 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 |
| 0590055 |
dogwood anthracnose |
Discula destructiva |
infected shoot |
| 1467379 |
Medusa needle blight |
Davisomycella medusa |
|
| 1398250 |
Taphrina flower fungus |
Taphrina johansonii |
Infected catkins |
| 0162080 |
Peach Rosette Mosaic Virus |
Nepovirus PRMV |
on American grape (Vitis labrusca cv. Concord) |
| 1467385 |
white pine needlecast |
Lophodermella arcuata |
|
| 1406043 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 1467398 |
common snow mold |
Phacidium infestans |
|
| 1224024 |
pecan scab |
Cladosporium caryigenum |
|
| 1415130 |
Diplodia blight |
Sphaeropsis sapinea |
Aug. 12, 2002 |
| 1467392 |
needle cast |
Virgella robusta |
|
| 1406121 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 2251039 |
Douglas-fir needlecast |
Rhabdocline pseudotsugae |
advanced symptoms at Christmas Tree Plantation |
| 1406035 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 1415200 |
fir-fireweed rust |
Pucciniastrum epilobii |
June 24, 2003 |
| 1415090 |
pine needle cast |
Lophodermium pinastri |
Needlecast. July 16, 2002 |
| 1415100 |
pine needle rusts |
Coleosporium spp. |
Rust on needles. July 23, 2002 |
| 5426944 |
Japanese pear rust |
Gymnosporangium asiaticum |
Aecia of the rust on asian pear foliage |
| 5426942 |
onion rust |
Puccinia allii |
Uredia on Allium leaves |
| 5426932 |
anthracnose |
Phyllachora repens |
Black leaf spots caused by the pathogen on leaves |
| 5426924 |
brown spot of rice |
Cochliobolus miyabeanus |
Round to elongated spots |
| 1406028 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 1406051 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 0176046 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
on second year foliage of Pinus maximinoi. |
| 0176040 |
Arabis Mosaic Virus |
Nepovirus ArMV |
Hop with "nettlehead" due to arabis mosaic nepovirus. |
| 0162089 |
Satsuma Dwarf Virus |
Sadwavirus SDV |
Boat and spoon-shaped malformed leaves of satsuma mandarin trees affected with the necrotic strain of satsuma dwarf virus. |
| 1355038 |
gray leaf spot |
Magnaporthe grisea |
Leaf from resistant rice variety CO39 showing ability to resist formation of lesions when the Magnaporthe grisea strain carries the AVR1-CO39 avirulence gene. The dark spots are areas where plant cells have died to abort rice blast infections. |
| 5407864 |
powdery mildew |
Erysiphe necator |
Berries in a grape bunch covered with the white powdery fungal growth of Uncinula necator (powdery mildew) |
| 1361143 |
Lophodermium needle casts |
Lophodermium spp. |
|
| 1467376 |
Rhabdocline needlecast |
Rhabdocline weirii |
|
| 1415113 |
Herpotrichia fungi |
Herpotrichia spp. |
July 23, 2002 |
| 1361139 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
Benomyl treated right |
| 1571087 |
powdery mildew |
Erysiphe betae |
Sugar beet leaf showing powdery mildew caused by Erysiphe polygoni. Note the chlorosis associated with the disease. March 1995 |
| 5041055 |
Diplodia blight |
Sphaeropsis sapinea |
Dark staining of the wood |
| 1571075 |
downy mildew |
Peronospora destructor |
Chlorotic patches on leaves are caused by downy mildew. March 1995 |
| 1571076 |
downy mildew |
Peronospora destructor |
The downy mildew pathogen (Peronospora destructor) produces a downy growth on the leaf surface. March 1995 |
| 1571077 |
downy mildew |
Peronospora destructor |
The downy mildew pathogen (Peronospora destructor) produces a downy growth on the leaf surface (center frame; left edge of leaf) which eventually kills the leaf. March 1995 |
| 5369880 |
brown felt blight of pines |
Neopeckia coulteri |
A snow mold, sometimes known as ‘bear wipe’. Photo taken September 4, 2007. The identification of the fungus is speculated since spores were not recovered. However, affected trees were immediately adjacent to similarly infected lodgepole pine. |
| 5393421 |
Japanese pear scab |
Venturia nashicola |
Black colored conidia on vein of pear leaf |
| 5418727 |
wheat stem rust |
Puccinia graminis |
Stem rust on winter wheat, variety Yellowstone, inoculated trials |
| 5046023 |
Stigmina leaf spot |
Stigmina lautii |
Fruiting bodies (sporodochia) emerging through stomata |
| 5422109 |
pasmo disease of linseed |
Mycosphaerella linicola |
|
| 5280073 |
downy mildew |
Pseudoperonospora cubensis |
|
| 5417115 |
Drechslera leaf spot |
Drechslera spp. |
|
| 5408864 |
Japanese pear rust |
Gymnosporangium asiaticum |
Rust lesion on stem and later cause stem blight |
| 5408860 |
apple scab |
Venturia inaequalis |
|
| 5408846 |
anthracnose |
Colletotrichum dematium |
|
| 5408844 |
powdery mildew |
Erysiphe necator |
|
| 5408842 |
Southern corn rust |
Puccinia polysora |
|
| 5408840 |
gray leaf spot |
Magnaporthe grisea |
Diamond shaped lesion caused by rice blast disease |
| 5403529 |
brown spot of rice |
Cochliobolus miyabeanus |
Round to elongated spots with yellow colored edges on rice leaves |
| 5201065 |
citrus greening |
Candidatus Liberibacter asiaticus |
|
| 1571044 |
late blight |
Phytophthora infestans |
|
| 1571051 |
late blight |
Phytophthora infestans |
|
| 5051042 |
Diplodia blight |
Sphaeropsis sapinea |
Diplodia shoot blight symptoms in a red pine stand following a hail storm. |
| 5051043 |
Diplodia blight |
Sphaeropsis sapinea |
Symptoms of Diplodia shoot blight in young red pine. |
| 5202017 |
soybean rust |
Phakopsora pachyrhizi |
pustules on lower leaf surface |
| 5201058 |
citrus greening |
Candidatus Liberibacter asiaticus |
|
| 5201059 |
citrus greening |
Candidatus Liberibacter asiaticus |
|
| 5201038 |
citrus canker |
Xanthomonas citri |
symptoms on tree |
| 5402982 |
brown spot |
Alternaria alternata |
On Queen of Colorado variety. |
| 5393380 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
|
| 5393961 |
powdery mildew |
Podosphaera macularis |
Sulfur treatment of common hop plants against powdery mildew infection caused by Podosphaera macularis. |
| 5393959 |
powdery mildew |
Podosphaera macularis |
Sulfur treatment of common hop plants against powdery mildew infection caused by Podosphaera macularis. |
| 5393946 |
powdery mildew |
Podosphaera macularis |
A common hop leaf with foliar signs of powdery mildew infection caused by Podosphaera macularis. |
| 5393947 |
powdery mildew |
Podosphaera macularis |
Common hop leaves with foliar signs of powdery mildew infection caused by Podosphaera macularis. |
| 5393942 |
powdery mildew |
Podosphaera macularis |
A common hop leaf with foliar signs of powdery mildew infection caused by Podosphaera macularis. |
| 5393943 |
powdery mildew |
Podosphaera macularis |
A common hop leaf with foliar signs of powdery mildew infection caused by Podosphaera macularis. |
| 5393920 |
powdery mildew |
Podosphaera macularis |
Common hop plants with powdery mildew infection caused by Podosphaera macularis on a field at Washington, USA |
| 5393921 |
powdery mildew |
Podosphaera macularis |
Common hop field with powdery mildew infection caused by Podosphaera macularis. |
| 5393913 |
powdery mildew |
Podosphaera macularis |
Common hop field with powdery mildew infection caused by Podosphaera macularis. |
| 5393354 |
powdery mildew |
Podosphaera macularis |
A common hop plant showing signs and symptoms of powdery mildew infection caused by Podosphaera macularis in a field at Oregon, USA. |
| 5393353 |
powdery mildew |
Podosphaera macularis |
A common hop plant showing signs and symptoms of powdery mildew infection caused by Podosphaera macularis in a field at Oregon, USA. |
| 5394446 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Alternaria on lower leaves of camelina |
| 5394447 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Alternaria on lower leaves of camelina |
| 5394448 |
leaf streak/black chaff |
Xanthomonas translucens pv. translucens |
Bacterial blight on wheat glumes |
| 5394449 |
leaf streak/black chaff |
Xanthomonas translucens pv. translucens |
Bacterial blight in chaff row of barley |
| 5394466 |
stripe rust |
Puccinia striiformis |
Stripe rust on variety Big Sky |
| 5394467 |
stripe rust |
Puccinia striiformis |
Stripe rust on variety Big Sky |
| 5394468 |
stripe rust |
Puccinia striiformis |
stripe rust on variety big sky, susceptible |
| 5394489 |
stripe rust |
Puccinia striiformis |
Stripe rust on variety Big Sky |
| 5394486 |
stripe rust |
Puccinia striiformis |
Stripe rust on variety Big Sky |
| 5394487 |
stripe rust |
Puccinia striiformis |
Stripe rust on variety Big Sky |
| 5394488 |
stripe rust |
Puccinia striiformis |
Stripe rust on variety Big Sky |
| 5394470 |
Septoria leaf spot and cankers |
Septoria spp. |
|
| 5394494 |
wheat stem rust |
Puccinia graminis |
|
| 5394497 |
wheat stem rust |
Puccinia graminis |
|
| 5389479 |
Beet Curly Top Virus |
Hybrigeminivirus BCTV |
A dry bean plant showing symptoms of beet curly top virus (BCTV) infection in the field. |
| 5389467 |
Beet Curly Top Virus |
Hybrigeminivirus BCTV |
A dry bean plant showing symptoms of beet curly top virus (BCTV) infection in the field. |
| 5050051 |
Cyclaneusma needle cast |
Cyclaneusma minus |
Severe infection on Scot's pine. |
| 1563086 |
scab |
Cladosporium cucumerinum |
|
| 2179044 |
rust on veronica |
Puccinia veronicae-longifoliae |
|
| 2178038 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2178034 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2178037 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2177065 |
wheat stem rust |
Puccinia graminis |
|
| 2177017 |
Drechslera leaf spot |
Drechslera spp. |
|
| 2177003 |
powdery mildew |
Podosphaera pannosa |
|
| 2177004 |
rose rusts |
Phragmidium spp. |
|
| 2177001 |
powdery mildew |
Podosphaera pannosa |
|
| 2176005 |
leaf spot |
Cercostigmina protearum var. protearum |
|
| 2175045 |
Graphiola leaf spot |
Graphiola phoenicis |
|
| 2175044 |
Graphiola leaf spot |
Graphiola phoenicis |
|
| 2175028 |
powdery mildew |
Erysiphe magnicellulata |
|
| 2175021 |
powdery mildew |
Erysiphe magnicellulata |
|
| 2175022 |
powdery mildew |
Erysiphe magnicellulata |
|
| 2174096 |
avocado scab |
Sphaceloma perseae |
|
| 2174097 |
avocado scab |
Sphaceloma perseae |
|
| 2174098 |
avocado scab |
Sphaceloma perseae |
|
| 2174038 |
mint rust |
Puccinia menthae |
|
| 2174039 |
mint rust |
Puccinia menthae |
|
| 2173085 |
powdery mildew |
Golovinomyces orontii |
|
| 2173066 |
Graphiola leaf spot |
Graphiola spp. |
|
| 2173016 |
anthracnose |
Colletotrichum spp. |
|
| 2173017 |
anthracnose |
Colletotrichum spp. |
|
| 2172089 |
fairy-ring leaf spot |
Mycosphaerella dianthi |
|
| 2172090 |
fairy-ring leaf spot |
Mycosphaerella dianthi |
|
| 2172082 |
fairy-ring leaf spot |
Mycosphaerella dianthi |
|
| 2172075 |
fairy-ring leaf spot |
Mycosphaerella dianthi |
|
| 2172077 |
fairy-ring leaf spot |
Mycosphaerella dianthi |
|
| 2172078 |
fairy-ring leaf spot |
Mycosphaerella dianthi |
|
| 2172079 |
fairy-ring leaf spot |
Mycosphaerella dianthi |
|
| 2172080 |
fairy-ring leaf spot |
Mycosphaerella dianthi |
|
| 2171066 |
downy mildew |
Peronospora farinosa f.sp. betae |
|
| 2171067 |
downy mildew |
Peronospora farinosa f.sp. betae |
|
| 2171017 |
bamboo rust |
Puccinia phyllostachydis |
|
| 5393413 |
downy mildew |
Hyaloperonospora brassicae |
Symptom on the leaf surface |
| 5393177 |
rust |
Tranzschelia discolor |
Yellow colored spot on surface of peach leaves |
| 5382914 |
cherry-spruce rust |
Pucciniastrum areolatum |
|
| 5382915 |
cherry-spruce rust |
Pucciniastrum areolatum |
|
| 5383038 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
|
| 5383027 |
oak anthracnose |
Apiognomonia errabunda |
|
| 1473150 |
needlecast |
Davisomycella attenuata |
5/1/1967 |
| 1473270 |
leaf spot |
Marssonia spp. |
aspen defoliation by Marssonia sp. and Melampsorella sp.; 9/4/1941 |
| 5390552 |
Alternaria leaf spot |
Alternaria padwickii |
Rice leaves with stack burn (Alternaria leaf spot) symptoms |
| 5389792 |
raspberry leaf spot |
Sphaerulina rubi |
Leaf spots on raspberry |
| 5389806 |
black spot |
Alternaria brassicicola |
|
| 5389805 |
black spot |
Alternaria brassicicola |
Leaf spots |
| 5389801 |
downy mildew |
Peronospora hariotii |
Angular leaf spots |
| 5390068 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
mature ascus, spores |
| 5390075 |
tar spot |
Phyllachora afzeliae |
ascospores (detail); isolated from Intsia bijuga (native forest tree) |
| 5382053 |
aster yellows phytoplasma |
Candidatus Phytoplasma asteris |
Severe symptoms expression in aster yellows infected coneflower.
|
| 5379701 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382975 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5221088 |
phlox powdery mildew |
Erysiphe cichoracearum |
|
| 1525601 |
mycelial neck rot |
Botrytis tulipae |
|
| 1525602 |
mycelial neck rot |
Botrytis tulipae |
|
| 1525681 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5335001 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5335090 |
Cercosporella leaf spot |
Cercosporella rubi |
on blackberry |
| 5336039 |
Drechslera leaf spot |
Drechslera spp. |
|
| 5336042 |
Phyllosticta leaf spots |
Phyllosticta spp. |
|
| 5336062 |
powdery mildew |
Oidium spp. |
|
| 1525302 |
Impatiens Necrotic Spot Virus |
Tospovirus INSV |
INSV on Gloxinia |
| 1525245 |
fir-fireweed rust |
Pucciniastrum epilobii |
|
| 5383162 |
powdery mildew |
Blumeria graminis |
Powdery mildew on blades |
| 5371917 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5371915 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5371916 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5368607 |
grape anthracnose |
Elsinoe ampelina |
Dark brown leaf spots on immature leaf |
| 5368900 |
downy mildew |
Sclerophthora macrospora |
Symptom of "Crazy top" with tassel replaced by a mass of leafy tissue. |
| 5368901 |
downy mildew |
Sclerophthora macrospora |
No ears but excessive tallness is likely genetic; not a symptom of "Crazy top". |
| 5332042 |
downy mildew |
Sclerophthora macrospora |
|
| 5378111 |
crown rust |
Puccinia coronata |
|
| 5372395 |
green alga |
Cephaleuros virescens |
|
| 5372396 |
green alga |
Cephaleuros virescens |
|
| 5372394 |
green alga |
Cephaleuros virescens |
|
| 5372391 |
green alga |
Cephaleuros virescens |
|
| 5372392 |
green alga |
Cephaleuros virescens |
|
| 5372393 |
green alga |
Cephaleuros virescens |
|
| 5372389 |
green alga |
Cephaleuros virescens |
|
| 5372390 |
green alga |
Cephaleuros virescens |
|
| 5372365 |
green alga |
Cephaleuros virescens |
|
| 5372362 |
green alga |
Cephaleuros virescens |
|
| 5372363 |
green alga |
Cephaleuros virescens |
|
| 5372364 |
green alga |
Cephaleuros virescens |
|
| 5372360 |
green alga |
Cephaleuros virescens |
|
| 5372361 |
green alga |
Cephaleuros virescens |
|
| 5372354 |
green alga |
Cephaleuros virescens |
|
| 5372355 |
green alga |
Cephaleuros virescens |
|
| 5372352 |
green alga |
Cephaleuros virescens |
|
| 5372353 |
green alga |
Cephaleuros virescens |
|
| 5372325 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372326 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372327 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5371912 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5371913 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5371914 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5373837 |
leaf curl |
Taphrina communis |
|
| 5373787 |
Sphaeropsis tip blight |
Sphaeropsis tumefaciens |
|
| 5373290 |
Phytophthora basal canker |
Phytophthora palmivora |
|
| 5372931 |
powdery mildew |
Microsphaera penicillata |
|
| 5372929 |
powdery mildew |
Microsphaera penicillata |
|
| 5372930 |
powdery mildew |
Microsphaera penicillata |
|
| 5371753 |
leaf spot |
Passalora sequoiae |
|
| 5371752 |
leaf spot |
Passalora sequoiae |
|
| 5372474 |
spot anthracnose |
Elsinoe corni |
|
| 5371751 |
leaf spot |
Passalora sequoiae |
|
| 5371729 |
leaf spot |
Passalora sequoiae |
|
| 5371726 |
leaf spot |
Passalora sequoiae |
|
| 5371725 |
leaf spot |
Passalora sequoiae |
|
| 5371724 |
leaf spot |
Passalora sequoiae |
|
| 5371721 |
leaf spot |
Passalora sequoiae |
|
| 5372647 |
citrus black spot |
Guignardia citricarpa |
|
| 5371649 |
late leaf spot |
Passalora personata |
|
| 5372165 |
anthracnose |
Colletotrichum spp. |
|
| 5372089 |
green alga |
Cephaleuros virescens |
|
| 5372087 |
green alga |
Cephaleuros virescens |
|
| 5372088 |
green alga |
Cephaleuros virescens |
|
| 5372086 |
green alga |
Cephaleuros virescens |
|
| 5372085 |
green alga |
Cephaleuros virescens |
|
| 1263088 |
sour orange scab |
Elsinoe fawcettii |
|
| 1949023 |
needle cast of Japanese larch |
Mycosphaerella laricis-leptolepidis |
Symptoms caused by Mycosphaerella laricis-leptolepidis on Larix leptolepis. |
| 1949019 |
Japanese pear rust |
Gymnosporangium asiaticum |
Aecidia (Roestelia stage) of Gymnosporangium asiaticum on pear. |
| 1949005 |
bacterial leaf blight of rice |
Xanthomonas oryzae pv. oryzae |
Xanthomonas oryzae pv. oryzae (bacterial blight) infection on rice leaves, showing distinct healthy and diseased areas. |
| 1949001 |
citrus canker |
Xanthomonas citri |
Xanthomonas campestris pv. citri on stem of Citrus sp.; outer layer of bark removed to show brown lesions in the healthy green bark tissues. |
| 0746054 |
lime witches’ broom phytoplasma |
Candidatus Phytoplasma aurantifolia |
Lime trees (Citrus aurantifolia) affected by lime witches' broom phytoplasma. |
| 0725098 |
gangrene |
Phoma exigua var. foveata |
Internal symptoms of Phoma exigua var. foveata on potato tubers showing more or less extensive cavities with definitive margins. Black and white photo |
| 0725094 |
Sapstreak disease of maple |
Ceratocystis virescens |
Trunk of Acer saccharum showing sap streak symptoms due to Ceratocystis virescens. |
| 0725089 |
Cherry Necrotic Rusty Mottle Virus |
Foveavirus CNRMV |
Cherry necrotic rusty mottle disease in Prunus avium cv. Frogmore, showing necrotic spots. Black and white photo |
| 0725069 |
citrus blight disease |
|
A more advanced stage of blight. Note wilting and loss of leaves and some early twig dieback. This is a Valencia sweet orange on rough lemon in the Dominican Republic. |
| 0725028 |
Peach X-disease |
Phytoplasma N/A |
Symptoms of peach X disease phytoplasma on peach by artificial transmission. Note the rolled leaves, swollen veins and yellowing. |
| 0725024 |
potato stolbur phytoplasma |
Phytoplasma SMLO |
Symptoms of potato stolbur phytoplasma on potato. Note the presence of aerial tubers. |
| 0725019 |
citrus blight disease |
|
Advanced symptoms of citrus blight. Tree has extensive dieback and is now producing interior shoot of new growth. Blighted trees usually do not die, but remain in this chronic stage. |
| 0656054 |
hemlock rust |
Melampsora farlowii |
Tsuga canadensis damaged by Melampsora farlowii, showing dead and dying (wilted) twigs in top and around outside of tree, with characteristic curlicued ends of diseased twigs. |
| 0656044 |
mal secco |
Phoma tracheiphila |
Wood discoloration in a lemon tree (Citrus limon) infected by mal secco (Deuterophoma tracheiphila). |
| 0656042 |
Citrus Tatter Leaf Virus |
Capillovirus CTLV |
Bud-union crease of sweet orange on trifoliate orange rootstock (Poncirus trifoliata) one year after inoculation with citrus tatter leaf capillovirus. |
| 0656016 |
downy mildew |
Plasmopara halstedii |
Sunflower severely affected by downy mildew (Plasmopara halstedii) in the field, showing retarded growth, leaf chlorosis and horizontal head. |
| 5371715 |
leaf spot |
Passalora sequoiae |
|
| 5371698 |
leaf spot |
Passalora sequoiae |
|
| 5371696 |
leaf spot |
Passalora sequoiae |
|
| 5371686 |
Cercospora leaf spot of rose |
Cercospora rosicola |
|
| 5372674 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 5372673 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 5372659 |
Gynosporanium rusts |
Gymnosporangium spp. |
|
| 5371675 |
needle blight |
Cercospora pini-densiflorae |
|
| 5372513 |
Entomosporium leaf spot |
Diplocarpon mespili |
|
| 5372502 |
Entomosporium leaf spot |
Diplocarpon mespili |
|
| 5372503 |
Entomosporium leaf spot |
Diplocarpon mespili |
|
| 5372499 |
Entomosporium leaf spot |
Diplocarpon mespili |
|
| 5372496 |
Entomosporium leaf spot |
Diplocarpon mespili |
|
| 5372497 |
Entomosporium leaf spot |
Diplocarpon mespili |
|
| 5372498 |
Entomosporium leaf spot |
Diplocarpon mespili |
|
| 5371641 |
Entomosporium leaf spot |
Diplocarpon mespili |
|
| 5372479 |
spot anthracnose |
Elsinoe corni |
|
| 5372476 |
spot anthracnose |
Elsinoe corni |
|
| 5372469 |
spot anthracnose |
Elsinoe corni |
|
| 5372466 |
spot anthracnose |
Elsinoe corni |
|
| 5372283 |
Curvularia fungus |
Curvularia trifolii |
|
| 5372282 |
Curvularia fungus |
Curvularia trifolii |
|
| 5372281 |
Cochliobolus leaf spot / black kernel |
Cochliobolus lunatus |
|
| 5372280 |
Cochliobolus leaf spot / black kernel |
Cochliobolus lunatus |
|
| 5372279 |
Cochliobolus leaf spot / black kernel |
Cochliobolus lunatus |
|
| 5372253 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 5372254 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 5372252 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 5372246 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 5372244 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 5372245 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 5372197 |
leaf spot |
Ceratobasidium stevensii |
|
| 5372174 |
anthracnose |
Colletotrichum spp. |
|
| 5372172 |
anthracnose |
Colletotrichum spp. |
|
| 5372171 |
anthracnose |
Colletotrichum spp. |
|
| 5372168 |
anthracnose |
Colletotrichum spp. |
|
| 5372169 |
anthracnose |
Colletotrichum spp. |
|
| 5372161 |
anthracnose |
Colletotrichum spp. |
|
| 5372162 |
anthracnose |
Colletotrichum spp. |
|
| 5372160 |
anthracnose |
Colletotrichum spp. |
|
| 5372159 |
anthracnose |
Colletotrichum spp. |
|
| 5372158 |
anthracnose |
Colletotrichum spp. |
|
| 5372157 |
anthracnose |
Colletotrichum spp. |
|
| 5372156 |
anthracnose |
Colletotrichum spp. |
|
| 5372155 |
anthracnose |
Colletotrichum spp. |
|
| 5372154 |
anthracnose |
Colletotrichum spp. |
|
| 5372151 |
anthracnose |
Colletotrichum spp. |
|
| 5372152 |
anthracnose |
Colletotrichum spp. |
|
| 5371601 |
Cercospora leaf spot |
Cercospora fici |
|
| 5372134 |
Cercosporella leaf spot |
Cercosporella mori |
|
| 5372077 |
green alga |
Cephaleuros virescens |
|
| 5372082 |
green alga |
Cephaleuros virescens |
|
| 5372041 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372042 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372040 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372038 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372039 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372037 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372036 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372035 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372033 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372034 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372032 |
Ascochyta fungi |
Ascochyta spp. |
|
| 5372030 |
Ascochyta fungi |
Ascochyta spp. |
|
| 5372031 |
Ascochyta fungi |
Ascochyta spp. |
|
| 5361538 |
Phoma blight |
Phoma macdonaldii |
A sunflower field with Phoma black stem infection caused by Phoma macdonaldii. |
| 5369843 |
brown felt blight of pines |
Neopeckia coulteri |
a snow mold, sometimes known as 'bear wipe'. Photo taken September 4, 2007 at Rabbit Ears' Pass in Routt County, Colorado |
| 5359702 |
Ascochyta fungi |
Ascochyta spp. |
Lawn in Fort Collins, Colorado, showing signs of infection with an Ascochyta sp. fungus in 1989. |
| 5031053 |
Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
Rhizosphaera needle cast on lower branches of white spruce. |
| 1473160 |
pine needle cast |
Lophodermella cerina |
|
| 1473260 |
pine needle cast |
Lophodermella cerina |
Lophodermella cerina center in ponderosa; NM, Lincoln Co., Mescalero Apache IR, Upper Fence Canyon |
| 1525098 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525099 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 5356782 |
rusts |
|
Pear leaves showing early infection with rust. |
| 5356695 |
peach leaf curl |
Taphrina deformans |
Young peach tree showing symptoms of peach leaf curl (Tephrina deformans). |
| 5357120 |
downy mildew |
Sclerophthora macrospora |
Rice plant in the hand, showing symptoms of infection with downy mildew (Sclerophthora macrospora). |
| 5357083 |
rusts |
|
Signs of rust infection on the underside of a rose leaf. |
| 5356988 |
downy mildew |
Sclerophthora macrospora |
Rice plant showing signs of infection with downy mildew (Sclerophthora macrospora). |
| 5356985 |
Helminthosporium leaf spot |
Helminthosporium spp. |
Rice leaves showing signs and symptoms of infection with Brown Spot (Helminthosporium oryzae). |
| 5356979 |
gray leaf spot |
Magnaporthe grisea |
Rice plant at the neck rot stage symptomatic of infection with rice blast (Pyricularia grisea). |
| 5359688 |
snow mold |
Typhula incarnata |
Symptoms of Typhula blight (snow mold) on the golf course at Vail, Colorado, in 1982. |
| 5359687 |
pink snow mold |
Microdochium nivale |
Symptoms of pink snow mold, Monographella nivalis (also known as Microdochium nivale), in an area missed during spraying of fungicide. |
| 5356830 |
edema |
|
Potato leaf showing symptoms of edema. |
| 5356980 |
gray leaf spot |
Magnaporthe grisea |
Close-up view of rice plants infected with both rice blast (Magnaporthe grisea, a.k.a. Pyricularia grisea) and brown spot of rice (Cochliobolus miyabeanus). |
| 5365781 |
late blight |
Phytophthora infestans |
Late blight (Phytophthora infestans) infection on the leaflet of a potato plant. |
| 5365779 |
late blight |
Phytophthora infestans |
Potato leaf showing signs of infection with late blight (Phytophthora infestans). |
| 5366967 |
Melampsora rusts |
Melampsora spp. |
Aspen leaf showing signs of Melampsora sp. rust. |
| 5366962 |
Gynosporanium rusts |
Gymnosporangium spp. |
Aecia of rust (Gymnosporangium sp.) on the leaf of a hawthorn. |
| 5366438 |
powdery mildew |
Sphaerotheca phytoptophila |
Witches' brooms in hackberry trees afflicted with powdery mildew (Sphaerotheca phytotophila). |
| 5366835 |
brown felt blight |
Herpotrichia juniperi |
Conifer limbs showing signs of brown felt blight (Herpotrichia juniperi). |
| 5366829 |
Douglas-fir needlecast |
Rhabdocline pseudotsugae |
Close-up view of Douglas-fir needles showing symptoms of infection with Douglas-fir needlecast fungus (Rhabdocline pseudotsugae). |
| 5366825 |
Elytroderma needle cast of pine |
Elytroderma deformans |
Witches broom on ponderosa pine (Pinus ponderosa) caused by Elytroderma needle cast fungus (Elytroderma deformans). |
| 5366816 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
Young aspen tree showing symptoms of shoot blight (Venturia tremulae). |
| 5366802 |
leaf mold |
Articularia quercina |
Gambel oak with oak witches' broom, caused by the mold Articularia quercina. |
| 5366784 |
tar spot |
Rhytisma salicinum |
Willow leaf showing signs of tar spot (Rhytisma salicinum) disease. |
| 5366809 |
anthracnose |
Apiognomonia spp. |
Sycamore tree showing defoliation as a result of anthracnose (Apiognomonia sp.). |
| 5366808 |
anthracnose |
Apiognomonia spp. |
Trunk of sycamore tree showing symptoms of infection with anthracnose (Apiognomonia sp.). |
| 5357527 |
bean anthracnose |
Colletotrichum lindemuthianum |
Some bean pods showing symptoms of anthracnose caused by Colletrotrichum lindemuthianum in the field. |
| 5366972 |
Melampsora rusts |
Melampsora spp. |
Symptoms of rust infection (Melampsora sp.) in cottonwood. |
| 5366961 |
Gynosporanium rusts |
Gymnosporangium spp. |
Telia of Gymnosporangium rust (Gymnosporangium sp.) on la juniper. |
| 5366953 |
juniper broom rust |
Gymnosporangium speciosum |
Symptoms of orange gall rust (Gymnosporangium speciosum) on a juniper. |
| 5366952 |
juniper broom rust |
Gymnosporangium speciosum |
Orange gall rust (Gymnosporangium speciosum) on a juniper. |
| 5366828 |
Douglas-fir needlecast |
Rhabdocline pseudotsugae |
Douglas-fir branch showing symptoms of the needlecast fungus Rhabdocline pseudotsugae. |
| 5366827 |
needle cast |
Bifusella saccata |
Limber pine (Pinus flexilis) afflicted with the needlecast fungus (Hypoderma saccatum). |
| 5366826 |
Elytroderma needle cast of pine |
Elytroderma deformans |
Ponderosa pine with witches' brooms and needlecast symptoms of needle cast fungus of pine (Elytroderma deformans). |
| 5366813 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
Aspen tree severely affected by shepherd's crook leaf and shoot blight (Venturia tremulae). |
| 5362505 |
early blight |
Alternaria solani |
Signs and symptoms of early blight (Alternaria solani), a disease of potatoes, on the leaf of a weedy nightshade (Solanum sp.). |
| 2145035 |
Gynosporanium rusts |
Gymnosporangium spp. |
Epicormic branching/brooming possibly from G. speciosum (G. bethelii and G. nelsonii noted in NM); |
| 5356775 |
wheat stem rust |
Puccinia graminis |
Stalk of winter wheat showing signs and symptoms of wheat stem rust (Puccinia graminis f.sp. tritici). |
| 1524200 |
Cercospora leaf spot |
Cercospora zeae-maydis |
Gray leaf spot |
| 5356661 |
powdery mildew |
Erysiphe necator |
Symptoms of grape powdery mildew (Uncinula necator) on fruit and leaves. |
| 5361310 |
dry bean rust |
Uromyces appendiculatus |
Bean leaf showing symptoms of rust (Uromyces appendiculatus) in variety trials conducted by Colorado State University. |
| 5362128 |
stripe rust |
Puccinia striiformis |
Close-up view of spring wheat leaves showing signs and symptoms of stripe rust (Puccinia striiformis). |
| 5362126 |
stripe rust |
Puccinia striiformis |
Close-up view of spring wheat leaves showing signs and symptoms of stripe rust (Puccinia striiformis). |
| 5362124 |
stripe rust |
Puccinia striiformis |
Close-up view of a spring wheat leaf showing signs and symptoms of stripe rust (Puccinia striiformis). |
| 5362114 |
stripe rust |
Puccinia striiformis |
Spring wheat plants showing signs and symptoms of stripe rust (Puccinia striiformis). |
| 5362112 |
stripe rust |
Puccinia striiformis |
Spring wheat plants showing signs and symptoms of stripe rust (Puccinia striiformis). |
| 5362110 |
stripe rust |
Puccinia striiformis |
Spring wheat plants showing signs and symptoms of stripe rust (Puccinia striiformis). |
| 5359590 |
wheat stem rust |
Puccinia graminis |
Stem rust (Puccinia graminis f.sp. tritici) on winter wheat. |
| 5363948 |
dry bean rust |
Uromyces appendiculatus |
Rust uredia and telia (Uromyces appendiculatus) on the surface of a bean leaf. |
| 1524196 |
Cercospora leaf spot |
Cercospora zeae-maydis |
Gray leaf spot on corn |
| 5361410 |
dry bean rust |
Uromyces appendiculatus |
Uredinia of bean rust (Uromyces appendiculatus) on a bean pod. |
| 5358904 |
powdery mildew |
Erysiphe betae |
Powdery mildew (Erysiphe polygoni) infection of bean pods in a field in Colombia. |
| 5358889 |
bean angular leaf spot |
Phaeoisariopsis griseola |
Angular leafspot (Phaeoisariopsis griseola) infection of a dyrbean pods and stem in Colombia. |
| 5358873 |
brown spot |
Alternaria alternata |
Drybean plant showing symptoms of Alternaria leaf and pod spot caused by Aternaria alternata on a bean field in Colombia. |
| 5367339 |
powdery mildew |
Leveillula taurica |
Powdery mildew (Leveillula taurica) on leaves of onion, in the field. |
| 5367338 |
powdery mildew |
Leveillula taurica |
Close-up view of powdery mildew (Leveillula taurica) on onion leaves. |
| 5360021 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Onion leaves showing symptoms of Xanthomonas Leaf Blight. |
| 5360022 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Onion leaves showing symptoms of Xanthomonas Leaf Blight. |
| 5360020 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Onion plants showing symptoms of Xanthomonas Leaf Blight. |
| 5360018 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Onion leaves showing symptoms of Xanthomonas Leaf Blight. |
| 5360017 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Onion plants showing symptoms of Xanthomonas Leaf Blight. |
| 5360015 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Onion plants showing symptoms of Xanthomonas Leaf Blight. |
| 5360016 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Onion plants showing symptoms of Xanthomonas Leaf Blight. |
| 5360014 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Onion plants showing symptoms of Xanthomonas Leaf Blight. |
| 5360012 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Onion plants showing symptoms of Xanthomonas Leaf Blight. |
| 5360013 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Onion plants showing symptoms of Xanthomonas Leaf Blight. |
| 5360008 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Onion plants showing symptoms of Xanthomonas Leaf Blight. |
| 5359780 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
A field onion plant leaf showing symptoms of bacterial leaf blight caused by Xanthomonas axonopodis pv. allii. |
| 5359779 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Field onion plants showing symptoms of bacterial leaf blight caused by Xanthomonas axonopodis pv. allii. |
| 5359774 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
A field onion plant leaf showing symptoms of bacterial leaf blight caused by Xanthomonas axonopodis pv. allii. |
| 1473149 |
needlecast |
Lophodermella montivaga |
photo taken 6/1/1967 |
| 1473157 |
Medusa needle blight |
Davisomycella medusa |
photo taken 8/1/1967 |
| 1473158 |
pine needle cast |
Lophodermella cerina |
also one Ips killed tree on the right |
| 1473129 |
needle cast |
Bifusella saccata |
1963 |
| 1525096 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525092 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525093 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525094 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525089 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1496056 |
apple scab |
Venturia inaequalis |
apple scab |
| 5340093 |
downy mildew |
Pseudoperonospora cubensis |
Cucumber cv. LaFayette; downy mildew caused by Pseudoperonospora cubensis; leaves collected during rain and scanned on a flatbed scanner a few hours later; shows watersoaking of tissue shortly before sporulation; See 5340094 for view of upper leaf surface of same leaf. |
| 5340094 |
downy mildew |
Pseudoperonospora cubensis |
cucumber cv. LaFayette; downy mildew caused by Pseudoperonospora cubensis; leaves collected during rain and scanned on a flatbed scanner a few hours later; shows watersoaking of tissue shortly before sporulation; See 5340093 for view of lower leaf surface of same leaf. Water soaking is much more subtle on upper leaf surface. |
| 1492032 |
peach leaf curl |
Taphrina deformans |
|
| 1492157 |
anthracnose |
Colletotrichum spp. |
anthracnose |
| 5051003 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 1473257 |
pine needle cast |
Lophodermella cerina |
heavy infection |
| 1473199 |
pine needle cast |
Lophodermella cerina |
on Ponderosa pine plantation; 7/1/1967, |
| 1473266 |
Elytroderma needle cast of pine |
Elytroderma deformans |
|
| 1524015 |
Southern corn leaf blight and stalk rot |
Bipolaris maydis |
Himaydis lesion on shuck and leaves |
| 5257085 |
late blight |
Phytophthora infestans |
|
| 5257088 |
late blight |
Phytophthora infestans |
|
| 5260010 |
Volutella blight |
Volutella buxi |
|
| 5260012 |
Volutella blight |
Volutella buxi |
|
| 5221005 |
sour orange scab |
Elsinoe fawcettii |
|
| 5221006 |
sour orange scab |
Elsinoe fawcettii |
|
| 5222060 |
Graphiola leaf spot |
Graphiola phoenicis |
|
| 5222061 |
Graphiola leaf spot |
Graphiola phoenicis |
|
| 5222062 |
Graphiola leaf spot |
Graphiola phoenicis |
|
| 5222063 |
Graphiola leaf spot |
Graphiola phoenicis |
|
| 5222064 |
Graphiola leaf spot |
Graphiola phoenicis |
|
| 5211072 |
leaf and flower gall |
Exobasidium vaccinii |
6/5/07 |
| 5220068 |
early blight |
Alternaria solani |
|
| 5220069 |
early blight |
Alternaria solani |
|
| 5224011 |
Cercospora leaf spot |
Cercospora capsici |
|
| 5224012 |
Cercospora leaf spot |
Cercospora capsici |
|
| 5223084 |
Alternaria blight |
Alternaria panax |
|
| 5223085 |
Alternaria blight |
Alternaria panax |
|
| 5261043 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5223092 |
Alternaria blight |
Alternaria tenuissima |
|
| 5223093 |
Alternaria blight |
Alternaria tenuissima |
|
| 5223094 |
Alternaria blight |
Alternaria tenuissima |
|
| 5261001 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261002 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261015 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261018 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5223091 |
early blight |
Alternaria solani |
|
| 5223086 |
early blight |
Alternaria solani |
|
| 5223089 |
early blight |
Alternaria solani |
|
| 5223090 |
early blight |
Alternaria solani |
|
| 5263001 |
leaf spot |
Passalora sequoiae |
|
| 5263002 |
leaf spot |
Passalora sequoiae |
|
| 5263005 |
leaf spot |
Passalora sequoiae |
|
| 5263006 |
leaf spot |
Passalora sequoiae |
|
| 5263008 |
leaf spot |
Passalora sequoiae |
|
| 5263009 |
leaf spot |
Passalora sequoiae |
|
| 5263011 |
leaf spot |
Passalora sequoiae |
|
| 5263013 |
leaf spot |
Passalora sequoiae |
|
| 5263015 |
leaf spot |
Passalora sequoiae |
|
| 5263016 |
leaf spot |
Passalora sequoiae |
|
| 5263017 |
leaf spot |
Passalora sequoiae |
|
| 5263019 |
leaf spot |
Passalora sequoiae |
|
| 5263020 |
leaf spot |
Passalora sequoiae |
|
| 5263021 |
leaf spot |
Passalora sequoiae |
|
| 5263022 |
leaf spot |
Passalora sequoiae |
|
| 5263023 |
leaf spot |
Passalora sequoiae |
|
| 5263024 |
leaf spot |
Passalora sequoiae |
|
| 5263026 |
leaf spot |
Passalora sequoiae |
|
| 5263031 |
leaf spot |
Passalora sequoiae |
|
| 5259091 |
Peanut Stunt Virus |
Cucumovirus PSV |
|
| 5259095 |
Peanut Stunt Virus |
Cucumovirus PSV |
|
| 5259096 |
Peanut Stunt Virus |
Cucumovirus PSV |
|
| 5259055 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5260005 |
Volutella blight |
Volutella buxi |
Leaf infection after 3 days |
| 5260007 |
Volutella blight |
Volutella buxi |
Leaf infection after 3 days |
| 5260008 |
Volutella blight |
Volutella buxi |
Leaf infection after 3 days |
| 5259045 |
Septoria leaf spot |
Septoria cornicola |
|
| 5257050 |
late blight |
Phytophthora infestans |
Phytopthora infestans Lycopersicon esculentum 7 days after inoc. |
| 5257051 |
late blight |
Phytophthora infestans |
Phytopthora infestans Lycopersicon esculentum 5 days after inoc. |
| 5257052 |
late blight |
Phytophthora infestans |
Phytopthora infestans Lycopersicon esculentum 5 days after inoc. |
| 5257053 |
late blight |
Phytophthora infestans |
Phytopthora infestans Lycopersicon esculentum 5 days after inoc. |
| 5257054 |
late blight |
Phytophthora infestans |
|
| 5257060 |
late blight |
Phytophthora infestans |
|
| 5257061 |
late blight |
Phytophthora infestans |
|
| 5257062 |
late blight |
Phytophthora infestans |
|
| 5257063 |
late blight |
Phytophthora infestans |
|
| 5257065 |
late blight |
Phytophthora infestans |
|
| 5257066 |
late blight |
Phytophthora infestans |
|
| 5257067 |
late blight |
Phytophthora infestans |
|
| 5222065 |
Graphiola leaf spot |
Graphiola phoenicis |
|
| 5222066 |
Graphiola leaf spot |
Graphiola phoenicis |
|
| 5220097 |
Cercospora leaf spot |
Cercospora liquidambaris |
|
| 5220079 |
Cercospora leaf spot |
Cercospora fusimaculans |
|
| 5221099 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5221100 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5222001 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5222002 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5222003 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5222004 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5222005 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5222006 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5222008 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5222009 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5222010 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5222011 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5222012 |
leaf and flower gall |
Exobasidium vaccinii |
|
| 5221007 |
sour orange scab |
Elsinoe fawcettii |
|
| 5221008 |
sour orange scab |
Elsinoe fawcettii |
|
| 5221009 |
sour orange scab |
Elsinoe fawcettii |
|
| 5221010 |
sour orange scab |
Elsinoe fawcettii |
|
| 5221011 |
sour orange scab |
Elsinoe fawcettii |
|
| 5221012 |
sour orange scab |
Elsinoe fawcettii |
|
| 5220098 |
sour orange scab |
Elsinoe fawcettii |
|
| 5220099 |
sour orange scab |
Elsinoe fawcettii |
|
| 5220100 |
sour orange scab |
Elsinoe fawcettii |
|
| 5221001 |
sour orange scab |
Elsinoe fawcettii |
|
| 5220093 |
black spot |
Diplocarpon rosae |
|
| 5220094 |
black spot |
Diplocarpon rosae |
|
| 5221087 |
phlox powdery mildew |
Erysiphe cichoracearum |
|
| 5221089 |
phlox powdery mildew |
Erysiphe cichoracearum |
|
| 5221090 |
phlox powdery mildew |
Erysiphe cichoracearum |
|
| 5221091 |
powdery mildew |
Erysiphe lagerstroemiae |
Purple variety is very susceptible |
| 5221092 |
powdery mildew |
Erysiphe lagerstroemiae |
Far East variety is fairly resistant |
| 5221093 |
powdery mildew |
Erysiphe lagerstroemiae |
Purple variety is susceptible |
| 5221097 |
powdery mildew |
Erysiphe lagerstroemiae |
Near East variety is fairly resistant |
| 5221098 |
powdery mildew |
Erysiphe lagerstroemiae |
|
| 5220095 |
Dothistroma needle blight |
Mycosphaerella pini |
|
| 5220096 |
Dothistroma needle blight |
Mycosphaerella pini |
|
| 5221002 |
spot anthracnose |
Elsinoe corni |
|
| 5221003 |
spot anthracnose |
Elsinoe corni |
|
| 5221094 |
Cercospora leaf spot |
Cercospora nandinae |
|
| 5222007 |
Cercospora leaf spot |
Cercospora nandinae |
|
| 5222013 |
Cercospora leaf spot |
Cercospora nandinae |
|
| 5222014 |
Cercospora leaf spot |
Cercospora nandinae |
|
| 5220072 |
Alternaria blight |
Alternaria tenuissima |
foliar symptoms |
| 5220073 |
Alternaria blight |
Alternaria tenuissima |
Foliar sympotoms |
| 5220074 |
Alternaria blight |
Alternaria tenuissima |
foliar symptoms |
| 5265026 |
chrysanthemum white rust |
Puccinia horiana |
|
| 5220070 |
early blight |
Alternaria solani |
|
| 5220071 |
early blight |
Alternaria solani |
collar rot |
| 1503018 |
needle blight of cedar |
Didymascella thujina |
Needle blight; red cedar |
| 1503017 |
needle blight of cedar |
Didymascella thujina |
Needle blight; red cedar |
| 1415121 |
Melampsora leaf rust |
Melampsora populnea f.sp. laricis |
Aecia. July 30, 2002 |
| 1415122 |
Melampsora leaf rust |
Melampsora populnea f.sp. laricis |
Aecia. July 30, 2002 |
| 5187013 |
wheat stem rust |
Puccinia graminis |
Predominantly stem rust (Puccinia graminis) pustules on susceptible cultivar Morocco. Some leaf rust (Puccinia triticina) pustules also visable; Photo taken at Tygerhoek experimental farm in the Western Cape, South Africa. |
| 5187016 |
wheat stem rust |
Puccinia graminis |
Stem rust (Puccinia graminis)pustules on the stems and leaves of susceptible cultivar Morocco; Photo taken at Tygerhoek experimental farm in the Western Cape, South Africa. |
| 5029013 |
Diplodia blight |
Sphaeropsis sapinea |
Main stem infection causing death of top. |
| 1479003 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 1479004 |
Sirococcus blight of conifers |
Sirococcus conigenus |
Needle droop, one of the symptoms that can indicate sirococcus blight on red pine. Photo taken on the Chequamegon National Forest in northern Wisconsin. |
| 5162071 |
guava rust |
Puccinia psidii |
with Puccinia psidii rust on young leaves |
| 5162072 |
guava rust |
Puccinia psidii |
with Puccinia psidii rust on young leaves |
| 5142097 |
phlox powdery mildew |
Erysiphe cichoracearum |
|
| 3037020 |
oak anthracnose |
Apiognomonia errabunda |
|
| 3037017 |
oak leaf blister |
Taphrina caerulescens |
Taphrina sp. caused oak leaf blister |
| 3035066 |
powdery mildews |
|
infected dogwood |
| 3035065 |
dogwood anthracnose |
Discula destructiva |
symptoms on leaves in green house |
| 3035070 |
dogwood anthracnose |
Discula destructiva |
old dogwood anthracnose canker on dead stem |
| 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 |
| 1324043 |
pecan scab |
Cladosporium caryigenum |
If unchecked, lesions like these caused by pecan scab can lead to tree defoliation and reduced yields. |
| 1317077 |
safflower rust |
Puccinia calcitrapae var. centaureae |
Early symptoms of safflower rust, a disease native to the United States, appear on th estem of a safflower seedling. |
| 1321090 |
late blight |
Phytophthora infestans |
Potatoes infected with late blight are purplish and shrunken on the outside, corky and rotted inside. |
| 5109040 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
|
| 5059039 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 5040095 |
Sirococcus blight of conifers |
Sirococcus conigenus |
droop symptoms |
| 5046047 |
Sirococcus blight of conifers |
Sirococcus conigenus |
seedling mortality |
| 5041059 |
Diplodia blight |
Sphaeropsis sapinea |
canker on main stem |
| 5041074 |
Diplodia blight |
Sphaeropsis sapinea |
severe infection in large tree |
| 5041083 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5042003 |
Diplodia blight |
Sphaeropsis sapinea |
top kill |
| 5078059 |
Impatiens Necrotic Spot Virus |
Tospovirus INSV |
Early and advanced symptoms of INSV on Gloxinina; 1-Jan-98 |
| 5051068 |
Elytroderma needle cast of pine |
Elytroderma deformans |
|
| 5058079 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 5055041 |
needle cast |
Lophodermium seditiosum |
|
| 5049042 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
|
| 5026050 |
apple scab |
Venturia inaequalis |
Asci with mature ascospores |
| 2112096 |
Phacidium fungus |
Phacidium coniferarum |
necrotic lesions on the bark of the Douglas fir stem |
| 2112098 |
Phacidium fungus |
Phacidium coniferarum |
Douglas fir killed by Phacidium coniferarum |
| 2111005 |
twist rust |
Melampsora populnea |
deformation of the Scots pine stem caused by the fungus |
| 2111014 |
needlecast |
Meloderma desmazieri |
damage to eastern white pine; August 2001 |
| 2111026 |
juniper-pear rust |
Gymnosporangium sabinae |
protuberances on a juniper branch, releasing teliospores |
| 2110084 |
needlecast |
Meloderma desmazieri |
damage to eastern white pine; August 2001 |
| 2110088 |
powdery mildew of oak |
Microsphaera alphitoides |
mycelium with cleistothecia (black dots) on a leaf |
| 2110091 |
pine needle rusts |
Coleosporium spp. |
aecia on needles, releasing aeciospores |
| 2110062 |
oak anthracnose |
Apiognomonia errabunda |
spots on infected leaves; May 2001 |
| 2111012 |
Dothistroma needle blight |
Mycosphaerella pini |
damage to Austrian pine; October 2000 |
| 4544062 |
fir-fireweed rust |
Pucciniastrum epilobii |
aeciospores on alternate host |
| 4554069 |
Repetophragma fungus |
Repetophragma wroblewski |
|
| 1467380 |
Medusa needle blight |
Davisomycella medusa |
|
| 1467377 |
Medusa needle blight |
Davisomycella medusa |
|
| 1467364 |
Elytroderma needle cast of pine |
Elytroderma deformans |
|
| 1468024 |
Marssonina leaf spot |
Marssonina tremulae |
|
| 2122025 |
leaf scorches |
|
Leaf scorch on aspen foliage, South Park, CO |
| 2122026 |
leaf scorches |
|
|
| 1415238 |
tar spot of maple |
Rhytisma acerinum |
|
| 1415211 |
Phacidium fungus |
Phacidium coniferarum |
July 8, 2003 |
| 1415215 |
Phacidium fungus |
Phacidium coniferarum |
Top dieback. July 8, 2003 |
| 1415263 |
birch rust |
Melampsoridium betulinum |
Aecia on leaves-lower side |
| 1406116 |
bronze leaf disease |
Apioplagiostoma populi |
|
| 2251047 |
Elytroderma needle cast of pine |
Elytroderma deformans |
|
| 0454054 |
Beet Leaf Curl Virus |
Rhabdovirus BLCV |
Severe form of beet leaf curl rhabdovirus in beet, showing death of older leaves. |
| 0454050 |
Beet Curly Top Virus |
Hybrigeminivirus BCTV |
Sugarbeet plant infected by beet curly top geminivirus, showing characteristic inrolling of the leaf margins. |
| 0177049 |
hemlock rust |
Melampsora farlowii |
Binucleate teliospores |
| 0177050 |
hemlock rust |
Melampsora farlowii |
Uninucleate teliospores |
| 1248009 |
powdery mildew |
Microsphaera abbreviata |
Infection on foliage of Quercus sp, Romania |
| 0162008 |
pear decline phytoplasma |
Candidatus Phytoplasma pyri |
Healthy pear tree cv. Abate Fetel. for comparison |
| 0176043 |
Arabis Mosaic Virus |
Nepovirus ArMV |
Hop garden, area unaffected by arabis mosaic nepovirus. |
| 1361144 |
Diplodia blight |
Sphaeropsis sapinea |
Tip and shoot dieback |
| 1254071 |
Gynosporanium rusts |
Gymnosporangium spp. |
|
| 1241607 |
pine needle cast |
Lophodermium nitens |
Needle casts and blights are most evident in lower crowns of trees. In severe infections such as this all except the current season's foliage are gone or dead. This is lophodermium nitens on western white pine. |
| 1241568 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Pseudothecia on underside of needles ranging from lightly infected (left) to heavily infected (right). |
| 1241508 |
Diplodia blight |
Sphaeropsis sapinea |
Severely infected tree. |
| 1241509 |
Diplodia blight |
Sphaeropsis sapinea |
Close-up of infected twig. |
| 1241505 |
Elytroderma needle cast of pine |
Elytroderma deformans |
Cambium of infected branches has small pockets of dark resin. |
| 1243110 |
aster yellows phytoplasma |
Candidatus Phytoplasma asteris |
Aster yellows infected flowers within a flower bed on petunias. |
| 1436032 |
anthracnose |
Colletotrichum graminicola |
|
| 1436040 |
anthracnose |
Colletotrichum graminicola |
|
| 1420017 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
brown spot (left) and healthy (right) seedlings, March 1966 |
| 0590049 |
dogwood anthracnose |
Discula destructiva |
twig dieback |
| 0590058 |
dogwood anthracnose |
Discula destructiva |
|
| 0590046 |
dogwood anthracnose |
Discula destructiva |
leaf diebak |
| 0590047 |
dogwood anthracnose |
Discula destructiva |
|
| 0355023 |
sycamore anthracnose |
Apiognomonia veneta |
on twigs |
| 0364037 |
anthracnose |
Colletotrichum acutatum |
leaf blight symptoms |
