USDA Forest Service:
1955. Pseudohylesinus grandis egg galleries on wood of Pacific silver fir and mycelium of Armillaria mellea. Baker River District, Mt. Baker National Forest. Washington.
USDA Forest Service:
1959. Tree damage by the fungus Armillaria millea in a mature stand of mixed conifers, Douglas-fir (Pseudotsuga menziesii), grand fir (Abies grandis), and ponderosa pine (Pinus ponderosa). Deschutes National Forest, Oregon.
USDA Forest Service:
1969. Insect and disease training. Armillaria root disease. Deschutes National Forest, Oregon.
USDA Forest Service:
c.1972. C.G (Terry) Shaw III doing Armillaria research. Glenwood, Washington.
USDA Forest Service:
2005. Armillaria ostoyae root disease center.
USDA Forest Service:
2005. The camp at Four Mile Lake on the Winema National Forest is always designated Camp Armillaria (Greg Filip made the sign) for those who re-measure long-term Armillaria ostoyae root disease plots.
USDA Forest Service:
2010. Mike Cruikshank (Canadian Forest Service) shows Armillaria ostoyae lesions on Douglas-fir. 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC.
USDA Forest Service:
2010. Armillaria ostoyae lesions on Douglas-fir. Presentation by Mike Cruikshank. 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC.
USDA Forest Service:
2010. Armillaria ostoyae lesions on Douglas-fir. Presentation by Mike Cruikshank. 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC.
USDA Forest Service:
2010. Armillaria ostoyae lesions on Douglas-fir. Presentation by Mike Cruikshank. 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC.
USDA Forest Service:
2010. Armillaria ostoyae. 58th Annual Western International Forest Disease Work Conference (WIFDWC), held October 4-8, 2010 in Valemount, BC.
USDA Forest Service:
2010. Armillaria ostoyae. 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC.
USDA Forest Service:
2010. Armillaria ostoyae. 58th Annual Western International Forest Disease Work Conference (WIFDWC), held October 4-8, 2010 in Valemount, BC.
USDA Forest Service:
c.2012. Mycelial fans of Armillaria ostoyae, cause of Armillaria root disease, under the bark of a dying sugar pine.
USDA Forest Service:
2012. OPUS root disease crew. L-R: Shawn Schroeder, Helen Maffei, Stephanie Pickard, and Greg Filip. Central Oregon.
USDA Forest Service:
2015. AROS (Armillaria ostoyae) Crew. Left-to-right: Greg Filip, Paul Deignan, Mike Simpson, Brent Oblinger, and Helen Maffei. Klamath Ranger District, Fremont-Winema National Forest, Oregon.
USDA Forest Service:
2015. Armillaria root disease.