Linda Haugen's Images
Title: Plant PathologistOrganization: USDA Forest Service
Unit: Forest Health Protection
Country: United States
Remove Filters:
Root and Butt / Root and Stem Diseases(X)
| 17 Images of 9 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 1400098 | Armillaria root rots | Armillaria spp. | Rhizomorphs on dead oak |
| 1400035 | hemlock varnish shelf | Ganoderma tsugae | conks on dead hemlock, Sylvania Wilderness, Ottawa National Forest, Michigan. |
| 1400128 | Tomentosus root disease | Onnia tomentosus | Windthrown spruce in Inonotus pocket, in Quebec, Canada. |
| 1400127 | Tomentosus root disease | Onnia tomentosus | Decay in cross section of wood from butt of infected spruce. Quebec, Canada. |
| 1400103 | Armillaria root rots | Armillaria spp. | Dying aspen, Nicolet National Forest, Wisconsin. Bark cut away to show strip kill on stem. Bark on root cut away to show armillaria rhizomorphs. See image #1400102. |
| 1400100 | Armillaria root rots | Armillaria spp. | Armillaria mushrooms (golden color, on left) with Entoloma abortivum mushrooms (creamy white, on right). In Wisconsin hardwood stand, autumn. |
| 1400102 | Armillaria root rots | Armillaria spp. | Armillaria rhizomorph under bark of root on declining (but still alive) aspen. See image #1400103. Nicolet National Forest, Wisconsin. |
| 1400129 | Tomentosus root disease | Onnia tomentosus | dried conks |
| 1400034 | hemlock varnish shelf | Ganoderma tsugae | on dead hemlock, Sylvania Wilderness, Ottawa National Forest, Michigan. |
| 1400105 | Armillaria root rots | Armillaria spp. | Armillaria mushrooms on a hardwood and white pine site in Upper Peninsula of Michigan, in autumn. |
| 1400028 | resinous polypore | Ischnoderma resinosum | |
| 1400116 | basal cankers | Swollen butt and woodpecker damage. At the time this photo was taken, this tree had no signs of chestnut blight. The swollen butt and woodpecker damage seemed to be unrelated to chestnut blight. The tree has since succombed to the disease. | |
| 1400148 | Phytophthora root and crown rots | Phytophthora spp. | Fraser fir Christmas tree killed by phytophthora root disease in poorly drained portion of plantation, North Carolina. |
| 1400032 | artist's conk | Ganoderma applanatum | on dead hardwood stump. |
| 1400101 | Armillaria root rots | Armillaria spp. | Armillaria mushrooms in a Wisconsin hardwood stand, autumn. Note one mushroom flipped over to show gills. |
| 1400064 | Xylaria root rots | Xylaria spp. | in a Michigan maple stand, August. |
| 1400006 | Schweinitzii root and butt disease | Phaeolus schweinitzii | Schweinitzii conk in conifer stand, northern California. |
