| 5477664 |
common greenshield lichen |
Flavoparmelia caperata |
|
| 5486105 |
common greenshield lichen |
Flavoparmelia caperata |
|
| 1593046 |
gilled polypore |
Lenzites betulina |
top view of sporocarp |
| 5468299 |
Hericium fungus |
Hericium coralloides |
Large fruiting bodies at the base of a sugar maple in northern Wisconsin. |
| 5443520 |
ash heart rot |
Perenniporia fraxinophila |
|
| 5443521 |
ash heart rot |
Perenniporia fraxinophila |
|
| 5443522 |
ash heart rot |
Perenniporia fraxinophila |
|
| 5443523 |
ash heart rot |
Perenniporia fraxinophila |
|
| 5443524 |
ash heart rot |
Perenniporia fraxinophila |
|
| 5443525 |
ash heart rot |
Perenniporia fraxinophila |
|
| 5443526 |
ash heart rot |
Perenniporia fraxinophila |
|
| 2652015 |
sulfur shelf |
Laetiporus sulphureus |
on dead Sitka spruce & hemlock in southeast Alaska |
| 2652004 |
red-belted fungus |
Fomitopsis pinicola |
on living Sitka spruce tree in Alaska |
| 1400124 |
cedar-apple rust |
Gymnosporangium juniperi-virginianae |
telial horns from galls on cedar, southeast Minnesota in spring following moist weather. |
| 1400035 |
hemlock varnish shelf |
Ganoderma tsugae |
conks on dead hemlock, Sylvania Wilderness, Ottawa National Forest, Michigan. |
| 0590036 |
wood decay |
Pholiota albocrenulata |
on sugar maple |
| 1406225 |
oyster mushroom |
Pleurotus spp. |
|
| 1406228 |
Dryad's Saddle |
Polyporus squamosus |
Chippewa National Forest |
| 1206048 |
Shaggy mane |
Coprinus comatus |
side view of single mushroom |
| 0590033 |
turkey tail |
Trametes versicolor |
cluster on elm with typical multicolor zones on top |
| 1396174 |
fly agaric |
Amanita muscaria |
|
| 1396175 |
Amanita mushroom |
Amanita spp. |
Ottawa National Forest |
| 2250085 |
red heart of pine |
Phellinus pini |
on larch |
| 3047008 |
Armillaria root rot |
Armillaria tabescens |
at base of young oak |
| 1206051 |
red-belted fungus |
Fomitopsis pinicola |
fruiting body on bole |
| 1400084 |
fly agaric |
Amanita muscaria |
|
| 1400025 |
birch conk |
Piptoporus betulinus |
conks on dead paper birch in northern Minnesota. |
| 1400026 |
birch conk |
Piptoporus betulinus |
conk on dead paper birch, northern Minnesota. |
| 1400023 |
yellow cap fungi |
Pholiota spp. |
Inside cavity of living basswood. |
| 1467175 |
sulfur shelf |
Laetiporus sulphureus |
older fruiting body |
| 1400036 |
northern tooth |
Climacodon septentrionalis |
Upper Peninsula, Michigan |
| 1400034 |
hemlock varnish shelf |
Ganoderma tsugae |
on dead hemlock, Sylvania Wilderness, Ottawa National Forest, Michigan. |
| 2252010 |
hispidus canker |
Inonotus hispidus |
stem canker |
| 3046070 |
oyster mushroom |
Pleurotus ostreatus |
|
| 1301048 |
white pine blister rust |
Cronartium ribicola |
Aecial spore stage of white pine blister rust on main stem of a sapling. |
| 1400039 |
yellow cap fungi |
Pholiota spp. |
Sylvania Wilderness |
| 3047019 |
weeping conk |
Inonotus dryadeus |
old conk on root flare |
| 1399068 |
sulfur shelf |
Laetiporus sulphureus |
|
| 1241575 |
fir needle cast |
Isthmiella abietis |
Fruiting bodies (hysterothecia) of Isthmiella abietis (needle cast) on midrib of subalpine fir needles. |
| 1198018 |
turkey tail |
Trametes versicolor |
Causes a sapwood rot, usually on hardwoods, but occasionally found on conifers. |
| 2121090 |
red-belted fungus |
Fomitopsis pinicola |
Red belted fungus, conk on a dead black spruce stem, photo taken in northern MN, St. Louis Co. |
| 2121088 |
red-belted fungus |
Fomitopsis pinicola |
External conk on a dead black spruce stem. Photo taken in St. Louis County, Mn, 2005 |
| 1467165 |
Schweinitzii root and butt disease |
Phaeolus schweinitzii |
rare |
| 1406256 |
red-belted fungus |
Fomitopsis pinicola |
|
| 1467174 |
sulfur shelf |
Laetiporus sulphureus |
old sporophore |
| 1406259 |
red-belted fungus |
Fomitopsis pinicola |
|
| 0808029 |
Shaggy mane |
Coprinus comatus |
Open. North Fork John Day Ranger District, Umatilla National Forest, northeastern Oregon |
| 1408075 |
decay |
|
Some hazards are obvious. |
| 1408074 |
decay |
|
Examine trees for indicators of internal problems when they are positioned where they could fall and damage property or injure people. |
| 1400021 |
northern tooth |
Climacodon septentrionalis |
|
| 1406215 |
Ectomycorrhizae |
Thelephora terrestris |
|
| 1406214 |
Shaggy mane |
Coprinus comatus |
|
| 1400071 |
fly agaric |
Amanita muscaria |
|
| 1400107 |
Hypoxylon cankers |
Hypoxylon spp. |
Stroma |
| 1504052 |
lion's mane hericium |
Hericium erinaceus |
Heart rot; Hericium sp. |
| 0808042 |
morel |
Morchella spp. |
North Fork John Day Ranger District, Umatilla National Forest, northeastern Oregon |
| 1400147 |
oyster mushroom |
Pleurotus ostreatus |
|
| 1442062 |
false tinder polypore |
Phellinus igniarius |
Fomes igniarius conks Stage Road Colorado Springs 5-8-74 |
| 0590039 |
ceramic parchment |
Xylobolus frustulatus |
|
| 1399037 |
fly agaric |
Amanita muscaria |
|
| 1400037 |
northern tooth |
Climacodon septentrionalis |
On live sugar maple in Sylvania Wilderness, Upper Peninsula, Michigan. |
| 5202073 |
scarlet elfcup |
Sarcoscypha austriaca |
Common name of scarlet cup, found in very early spring in a northern hardwood stand, Dunn Co., WI |
| 5059022 |
wood decay |
Schizophyllum commune |
Fungus colonizing a sunscald wound |
| 5299028 |
Hericium fungus |
Hericium americanum |
Fruiting cluster of Hericium americanum. |
| 5054094 |
artist's conk |
Ganoderma applanatum |
Ganoderma applanatum on American beech |
| 5055083 |
artist's conk |
Ganoderma applanatum |
Martin MacKenzie standing on a large Ganoderma conk |
| 1407050 |
lichen |
|
Trees help support many other living organisms, including these lichens. Far from harming the tree, lichens indicate pollution-free air. |
| 5203016 |
clinker polypore |
Inonotus obliquus |
Photo taken in banning State park, Pine Co., MN |
| 1473090 |
Macrophoma rough bark disease |
Macrophoma tumefaciens |
close-up of lumpy, rough, round gall on aspen branch |
| 1473020 |
Hypoxylon canker of aspen |
Entoleuca mammata |
|
| 1473155 |
Cytospora cankers |
Cytospora spp. |
Valsa (perfect stage) of Cytospora (imperfect) |
| 1473011 |
trunk rot |
Pholiota adiposa |
tree #516 |
| 5057009 |
ash heart rot |
Perenniporia fraxinophila |
|
| 5045001 |
king bolete |
Boletus edulis |
|
| 5047089 |
Armillaria root rots |
Armillaria spp. |
|
| 1502044 |
annosum root disease |
Heterobasidion annosum |
Annosus root rot; H.a. conks at base of a lob bole |
| 1506095 |
stinkhorn mushroom |
Clathrus spp. |
Clathrus sp. |
| 1506097 |
Perenniporia decay |
Perenniporia subacida |
Poria subacida on hardwood firewood |
| 1507001 |
Phellinus fungus |
Phellinus gilvus |
Polyporus gilvus, rotten hardwood |
| 1507020 |
turkey tail |
Trametes versicolor |
Coriolus versicolor |
| 1507023 |
Nectria canker |
Nectria cinnabarina |
Nectria cinnabarina on live oak |
| 1504059 |
Irpex canker |
Spongipellis pachyodon |
|
| 1504067 |
hispidus canker |
Inonotus hispidus |
Polyporus hispidus; water oak |
| 1504069 |
hispidus canker |
Inonotus hispidus |
Polyporus hispidus |
| 1504085 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
Hypoxylon atropunctatum stroma; oak |
| 1504086 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
Hypoxylon atropunctatum stroma; oak |
| 1504087 |
Hypoxylon cankers |
Hypoxylon spp. |
Hypoxylon stroma; oak |
| 1504070 |
artist's conk |
Ganoderma applanatum |
Fomes applanatus |
| 1504073 |
artist's conk |
Ganoderma applanatum |
Fomes applanatus |
| 1504074 |
artist's conk |
Ganoderma applanatum |
Fomes applanatus |
| 1504075 |
artist's conk |
Ganoderma applanatum |
Fomes applanatus |
| 1504080 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
Hypoxylon atropunctatum stroma; oak |
| 1504083 |
Hypoxylon canker of oak |
Biscogniauxia atropunctata atropunctata |
Hypoxylon atropunctatum stroma; oak |
| 1504043 |
rusty gilled polypore |
Gloeophyllum sepiarium |
Four Notch Area |
| 1504044 |
rusty gilled polypore |
Gloeophyllum sepiarium |
Lenzites saepiaria; Four Notch Area |
| 1504049 |
polypore |
Globifomes graveolens |
Polyporus graveolens; willow oak |
| 5203017 |
clinker polypore |
Inonotus obliquus |
Photo taken in Banning State Park, Pine Co., MN |
| 5203018 |
yellow birch |
Betula alleghaniensis |
Photo taken in Banning State park, MN |
| 1484017 |
yellow cap fungi |
Pholiota spp. |
|
| 1484018 |
yellow cap fungi |
Pholiota spp. |
|
| 1484019 |
yellow cap fungi |
Pholiota spp. |
|
| 1484020 |
yellow cap fungi |
Pholiota spp. |
|
| 5029051 |
tinder fungus |
Fomes fomentarius |
|
| 5028009 |
false tinder polypore |
Phellinus igniarius |
Phellinus igniarius conk on beech tree with beech bark disease caused by Cryptococcus fagisuga and Neonectria coccinea (Pers.) Fr. |
| 1398175 |
sulfur shelf |
Laetiporus sulphureus |
|
| 1398215 |
hemlock varnish shelf |
Ganoderma tsugae |
|
| 1479009 |
white heartwood rot |
Phellinus tremulae |
|
| 1479034 |
fly agaric |
Amanita muscaria |
Photo taken in Waushara County, Wisconsin, red pine stand. |
| 3036073 |
annosum root disease |
Heterobasidion annosum |
Heterobasidion annosum conks |
| 3036096 |
Lentinus mushrooms |
Lentinus spp. |
|
| 3036051 |
wood decay and heart rots of hardwoods |
Fomes spp. |
|
| 3036058 |
wood decay |
Pholiota albocrenulata |
mushrooms fruiting on hardwood slash |
| 3036059 |
flooding/high water |
|
mycena leaina flood killed trees |
| 3036061 |
Ganoderma root and butt rot |
Ganoderma lucidum |
conk on root |
| 3036064 |
annosum root disease |
Heterobasidion annosum |
Annosus conk on root, SC |
| 3036072 |
Inonotus canker |
Inonotus radiatus |
Polyporus cacker rot of oak, P. radiatas-maple |
| 3036046 |
heart rot |
Phellinus rimosus |
Fomes rimosus on black locust |
| 3035051 |
ectomycorrhizae |
Pisolithus tinctorius |
Pisolithus tinctorius fruiting body cross-section |
| 3036015 |
fusiform rust |
Cronartium quercuum f.sp. fusiforme |
fruiting gall on stem |
| 3036017 |
eastern pine gall rust |
Cronartium quercuum |
Pycnial ooze on stem of pine |
| 1442125 |
Ectomycorrhizae |
Thelephora terrestris |
Thelophora terrestris on southern pine |
| 1442126 |
Ectomycorrhizae |
Thelephora terrestris |
Thelophora terrestris fruiting on southern pine |
| 5057026 |
canker rot |
Phellinus everhartii |
|
| 5039044 |
Neonectria canker |
Neonectria galligena |
perithecia |
| 5042087 |
Nectria canker |
Nectria spp. |
birch bark disease |
| 5049074 |
silverleaf |
Chondrostereum purpureum |
|
| 5049086 |
northern tooth |
Climacodon septentrionalis |
|
| 5057093 |
oyster mushroom |
Pleurotus spp. |
|
| 5035047 |
false tinder polypore |
Phellinus igniarius |
|
| 5057049 |
white heartwood rot |
Phellinus tremulae |
|
| 5055003 |
sulfur shelf |
Laetiporus sulphureus |
|
| 5054039 |
clinker polypore |
Inonotus obliquus |
|
| 5052012 |
tinder fungus |
Fomes fomentarius |
|
| 5052013 |
red-belted fungus |
Fomitopsis pinicola |
|
| 5052043 |
artist's conk |
Ganoderma applanatum |
|
| 5054031 |
clinker polypore |
Inonotus obliquus |
|
| 5054037 |
clinker polypore |
Inonotus obliquus |
|
| 5054038 |
clinker polypore |
Inonotus obliquus |
|
| 1467167 |
veiled polypore |
Cryptoporus volvatus |
|
| 1467181 |
heart rot |
Laricifomes officinalis |
|
| 1467182 |
heart rot |
Laricifomes officinalis |
|
| 1406260 |
false tinder polypore |
Phellinus igniarius |
|
| 1406258 |
Phellinus heartrots |
Phellinus spp. |
|
| 1400079 |
Ramaria fungi |
Ramaria spp. |
coral fungus on rotting log, Michigan maple forest in August. |
| 1400145 |
oyster mushroom |
Pleurotus ostreatus |
|
| 1400101 |
Armillaria root rots |
Armillaria spp. |
Armillaria mushrooms in a Wisconsin hardwood stand, autumn. Note one mushroom flipped over to show gills. |
| 2251047 |
Elytroderma needle cast of pine |
Elytroderma deformans |
|
| 1241672 |
Armillaria root rot |
Armillaria solidipes |
Mushrooms of Armillaria can be produced in abundance, but are not reliably present. |
| 1241720 |
white pine blister rust |
Cronartium ribicola |
Spores are produced within the blisters. |
| 1241568 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Pseudothecia on underside of needles ranging from lightly infected (left) to heavily infected (right). |
| 1241531 |
veiled polypore |
Cryptoporus volvatus |
Close-up of Pouch fungus fruits through bark beetle emergence holes on boles. |
| 1241534 |
red heart of pine |
Phellinus pini |
Pini conks are woody and shelving or nearly resupinate with a tan to cinnamon colored pore layer. |
| 1241543 |
red-belted fungus |
Fomitopsis pinicola |
Red belt fungus conks has a distinctive red band along the perimeter when mature and fresh. |
| 1241544 |
red-belted fungus |
Fomitopsis pinicola |
Red belt fungus conks has a distinctive red band along the perimeter when mature and fresh. |
| 1241545 |
red-belted fungus |
Fomitopsis pinicola |
Red belt fungus conks has a distinctive red band along the perimeter when mature and fresh but are often seen in the immature stage. |
| 1241546 |
heart rot |
Laricifomes officinalis |
Typical quinine conk fruiting high on the stem of a tree. |
| 1241547 |
heart rot |
Laricifomes officinalis |
Close-up of conk showing the pore layer on the underside. |
| 1241529 |
indian paint fungus |
Echinodontium tinctorium |
Conks have an orange-red context and gray teeth projecting down. They form beneath branches. |
| 3047007 |
lion's mane hericium |
Hericium erinaceus |
White River National Wildlife Refuge, Arkansas USA |
| 2251007 |
stalactiform blister rust |
Cronartium coleosporioides |
aecia |
| 2251027 |
Dasyscypha cankers |
Lachnellula spp. |
|
| 4215056 |
sooty-bark canker |
Encoelia pruinosa |
apothecia |
| 2250063 |
laminated root disease |
Phellinus weirii |
|
| 2250080 |
indian paint fungus |
Echinodontium tinctorium |
|
| 2250082 |
indian paint fungus |
Echinodontium tinctorium |
on grand fir |
| 2250086 |
red-belted fungus |
Fomitopsis pinicola |
|
| 0590022 |
black knot |
Apiosporina morbosa |
gall and fruiting body on cherry |
| 0590028 |
sulfur shelf |
Laetiporus sulphureus |
|
| 0590029 |
false tinder polypore |
Phellinus igniarius |
|
| 0590031 |
oyster mushroom |
Pleurotus ostreatus |
cluster of fruiting bodies |
| 0590035 |
turkey tail |
Trametes versicolor |
cluster with typical multicolor zones on upper sides |
| 0488098 |
trunk rot |
Ustulina deusta |
on oak |
| 0488105 |
lion's mane hericium |
Hericium erinaceus |
|
| 0590045 |
hispidus canker |
Inonotus hispidus |
decay |
| 0355025 |
red heart decay bleeding fungus |
Rigidoporus sanguinolentus |
|
| 0355045 |
Lentinus mushrooms |
Lentinus spp. |
mushroom produced on inoculated bolt |
| 0364035 |
Phomopsis blight |
Phomopsis juniperivora |
close-up view of fruiting bodies on redcedar |
| 0364057 |
annosum root disease |
Heterobasidion annosum |
|
| 0364077 |
Ectomycorrhizae |
Thelephora terrestris |
mycorrhiza at base of seedling from nursery |
