Robert L. James's Images
Title: Plant PathologistOrganization: USDA Forest Service
Unit: Forest Health Protection - Coeur d’Alene Field Office
Country: United States
Remove Filters:
Landscape(X)
| 18 Images of 11 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 2251051 | Dothistroma needle blight | Mycosphaerella pini | |
| 2250030 | Armillaria root rots | Armillaria spp. | resinosus on buttress root of Douglas-fir |
| 2251045 | Swiss needle cast | Phaeocryptopus gaeumannii | symptomatic trees |
| 2251065 | white heartwood rot | Phellinus tremulae | on aspen |
| 1241668 | Armillaria root rot | Armillaria solidipes | Fresh and older (bark) resinosus at the base of an infected Douglas-fir. |
| 2251067 | white heartwood rot | Phellinus tremulae | decayed wood |
| 1241653 | 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. | |
| 1241741 | fir and spruce canker | Canker progressing from a branch into the stem. | |
| 1241742 | fir and spruce canker | Fir and spruce cankers are usually on branches, causing flagging. | |
| 1241611 | Dothistroma needle blight | Mycosphaerella pini | Distinctive red transverse bands in which the fungus forms fruiting bodies. |
| 1241677 | annosum root disease | Heterobasidion annosum | Annosus root disease often is diagnosed by looking in hollows of nearby stumps where the conks are found. The surface is gray or brown. |
| 1241680 | annosum root disease | Heterobasidion annosum | One means of identifying annosus root disease is to incubate freshly cut sections of infected wood in a plastic bag to stimulate production of the asexual stage, Spiniger meineckellum (40x). |
| 1241681 | laminated root disease | Phellinus weirii | Brown stain is sometimes seen in the sapwood or outer heartwood of trees with laminated root rot. |
| 1241710 | Atropellis canker | Atropellis piniphila | Black staining of the sapwood beneath an Atropellis canker helps distinguish it from other stem cankers. |
| 1241498 | Douglas-fir dwarf mistletoe | Arceuthobium douglasii | Female |
| 2250050 | laminated root disease | Phellinus weirii | decay and stain in Douglas fir |
| 2250031 | laminated root disease | Phellinus weirii | mortality centers |
| 2250047 | laminated root disease | Phellinus weirii | wind-thrown tree |
