| 1241503 |
fir broom rust |
Melampsorella caryophyllacearum |
Fir broom rust stimulates yellow-tinged witches brooms in fir branches. |
| 1241526 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 1241612 |
lodgepole pine needle cast |
Lophodermella concolor |
Lophodermella concolor turns needles bright red-brown just before bud break in the spring. |
| 1241613 |
lodgepole pine needle cast |
Lophodermella concolor |
Lophodermella concolor turns needles bright red-brown just before bud break in the spring. |
| 1241617 |
pine needle cast |
Lophodermium nitens |
The wilted needles are red-brown with dark mottling at first, then gray. |
| 1241669 |
Armillaria root rot |
Armillaria solidipes |
Resinosus on a young, thin-barked Douglas-fir is often the first sign of infection. |
| 1241610 |
Dothistroma needle blight |
Mycosphaerella pini |
A light infection. |
| 1241713 |
white pine blister rust |
Cronartium ribicola |
Stem cankers eventually girdle and kill trees. |
| 1241583 |
Delphinella shoot blight |
Delphinella abietis |
Delphinella abietis infects and kills tender shoots during expansion in early summer. |
| 1241661 |
root diseases and rots |
|
Crown symptoms of root disease (right) are most evident when compared to a healthy crown (left). |
| 1241721 |
western gall rust |
Endocronartium harknessii |
Branch gall as they normally appear. |
| 1241723 |
western gall rust |
Endocronartium harknessii |
Stem ("hip") canker caused by western gall rust. |
| 1241652 |
root diseases and rots |
|
Typical root disease patch (or pocket)with dead and symptomatic trees, especially at the margins, and younger trees in the center of the patch. |
| 1241656 |
root diseases and rots |
|
Root disease mortality in young stands often goes undetected before about 20 years of age. |
| 1241658 |
root diseases and rots |
|
Root disease mortality in young stands often goes undetected before about 20 years of age. |
| 1241660 |
root diseases and rots |
|
Root disease mortality in young stands often goes undetected before about 20 years of age. From the scattered or small groups of mortality, the disease generally progresses to large mosaics of poorly stocked forest by age 80-100. |
| 1241541 |
cedar brown pocket rot |
Postia sericeomollis |
Cedar brown pocket rot occurs in isolated large pockets of brown cubical decay. Seen in longitudinal. |
| 1241686 |
laminated root disease |
Phellinus weirii |
Decay from laminated root rot has distinctive round pits about pinhead-size. |
| 1241687 |
Schweinitzii root and butt disease |
Phaeolus schweinitzii |
Brown cubical decay in the butt end of the first log is the most common indication. |
| 1241693 |
Schweinitzii root and butt disease |
Phaeolus schweinitzii |
Small diameter roots sometimes have a dark red resinous heart when infected. |
| 1241694 |
Schweinitzii root and butt disease |
Phaeolus schweinitzii |
Roots of windthrown trees with schweinitzii root rot commonly are stubbed and have gall-like swellings. |
| 1241716 |
white pine blister rust |
Cronartium ribicola |
Basal canker. |
| 1241540 |
laminated root disease |
Phellinus weirii |
Examined longitudinally, wood decayed by Phellinus weirii separates easily into thin concentric sheets. |
| 1241508 |
Diplodia blight |
Sphaeropsis sapinea |
Severely infected tree. |
| 1241509 |
Diplodia blight |
Sphaeropsis sapinea |
Close-up of infected twig. |
| 2251092 |
Schweinitzii root and butt disease |
Phaeolus schweinitzii |
Brown decay in center of approx. 4 cm diameter root. Very common and slow-acting disease of conifers. |
