| 0364044 |
Leptographium root disease |
Leptographium procerum |
terminal damage - shoot failure |
| 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 |
| 2250027 |
root diseases and rots |
|
in crown of tree |
| 0364053 |
root diseases and rots |
|
basal canker (with bark removed) on sand pine |
| 4215007 |
Armillaria root rots |
Armillaria spp. |
basal resinosus in true fir |
| 2250029 |
black stain root disease |
Ophiostoma wageneri |
stained wood of Douglas-fir |
| 1400035 |
hemlock varnish shelf |
Ganoderma tsugae |
conks on dead hemlock, Sylvania Wilderness, Ottawa National Forest, Michigan. |
| 1398201 |
Armillaria root rots |
Armillaria spp. |
40 year old recently killed white spruce with bark removed at the tree base. Chequamegon National Forest, 2004 |
| 1399019 |
Leptographium root disease |
Leptographium procerum |
wilt symptoms and resinosis |
| 1399021 |
Leptographium root disease |
Leptographium procerum |
diffuse canker behind resinosis at root collar |
| 1206051 |
red-belted fungus |
Fomitopsis pinicola |
fruiting body on bole |
| 1399020 |
Leptographium root disease |
Leptographium procerum |
resinosis |
| 1467175 |
sulfur shelf |
Laetiporus sulphureus |
older fruiting body |
| 1400034 |
hemlock varnish shelf |
Ganoderma tsugae |
on dead hemlock, Sylvania Wilderness, Ottawa National Forest, Michigan. |
| 1468342 |
Armillaria root rots |
Armillaria spp. |
October 1983 |
| 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 |
| 1467174 |
sulfur shelf |
Laetiporus sulphureus |
old sporophore |
| 1399018 |
Leptographium root disease |
Leptographium procerum |
resinosis |
| 2733054 |
annosum root disease |
Heterobasidion annosum |
stringy decay of diseased root |
| 1241669 |
Armillaria root rot |
Armillaria solidipes |
Resinosus on a young, thin-barked Douglas-fir is often the first sign of infection. |
| 2733052 |
annosum root disease |
Heterobasidion annosum |
trees infected with root rot can be distinguished from healthy trees by their pale green color (infected tree on left) |
| 1241666 |
root diseases and rots |
|
A cluster of young Douglas-fir and grand fir have been killed by root disease near this old stump. |
| 2250037 |
Armillaria root rot |
Armillaria solidipes |
mycelial fan under bark at base of tree |
| 1241663 |
root diseases and rots |
|
If bark beetles attack dying trees they often hasten mortality. If mortality is hastened, the trees may not have time to shed many needles before they die. In this case, the crown may turn uniformly yellow or red. |
| 1241665 |
Armillaria root rot |
Armillaria solidipes |
This young western white pine has been killed by Armillaria root disease which was probably harbored by the adjacent stump. |
| 1241670 |
Armillaria root rot |
Armillaria solidipes |
Cutting away the bark reveals white fan-shaped felts of Armillaria mycelium in the cambium at the root collar. |
| 1467155 |
black stain root disease |
Ophiostoma wageneri |
|
| 1241662 |
root diseases and rots |
|
A stress cone crop produced on a tree with thinning foliage and shortened terminal growth is an indication of root disease. |
| 1241654 |
root diseases and rots |
|
Root disease is often easily recognized from afar. Changes in tree density and clusters of young trees or brush assocaiated with tree mortality are good indicators of root disease. |
| 1241661 |
root diseases and rots |
|
Crown symptoms of root disease (right) are most evident when compared to a healthy crown (left). |
| 2250026 |
Armillaria root rot |
Armillaria solidipes |
mycelial fan under bark of young western hemlock |
| 1467019 |
black stain root disease |
Ophiostoma wageneri |
|
| 1473102 |
Armillaria root rot |
Armillaria solidipes |
mycelial fans |
| 5047090 |
Armillaria root rots |
Armillaria spp. |
|
| 5031042 |
annosum root disease |
Heterobasidion annosum |
|
| 5031043 |
annosum root disease |
Heterobasidion annosum |
|
| 1502044 |
annosum root disease |
Heterobasidion annosum |
Annosus root rot; H.a. conks at base of a lob bole |
| 1502051 |
annosum root disease |
Heterobasidion annosum |
Annosus root rot; snapped stump; resinosis |
| 1502052 |
annosum root disease |
Heterobasidion annosum |
Annosus root rot; windthrow |
| 1502060 |
annosum root disease |
Heterobasidion annosum |
Annosus root rot; infection center |
| 1502061 |
annosum root disease |
Heterobasidion annosum |
Annosus root rot; crown symptoms |
| 1502059 |
annosum root disease |
Heterobasidion annosum |
Annosus root rot; sampling infected roots |
| 1398215 |
hemlock varnish shelf |
Ganoderma tsugae |
|
| 1479015 |
Armillaria root rots |
Armillaria spp. |
Dead young red pine killed by armillaria infection. Removing the bark at the base of the tree would reveal white mycelial mats. |
| 3036061 |
Ganoderma root and butt rot |
Ganoderma lucidum |
conk on root |
| 3036065 |
root rot |
Phellinus hartigii |
sand pine root canker |
