bull thistle (Cirsium vulgare ) on grand fir, Douglas-fir, and associated species (Eastern Oregon and Washington) (  ) - 0806080

bull thistle
Cirsium vulgare (Savi) Ten.

Host: grand fir, Douglas-fir, and associated species (Eastern Oregon and Washington)
Descriptor: Competition
Description: under dead fir killed by budworm. Swale Creek, Under dead fir killed by western spruce budworm (Choris┬Čtoneura occidentalis); Swale Creek, Heppner Ranger District, Umatilla National Forest, northeastern Oregon
Image location: United States

Specimen Information

Specimen in collection: No
Specimen Condition:
Identification Method:

Photographer Information

Name: Dave Powell
Organization: USDA Forest Service (retired)
Country: United States

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Image Number: 0806080

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Image Citation:(?) Dave Powell, USDA Forest Service (retired), Bugwood.org

Node Affiliation: Bugwood - UGA

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Image uploaded on Wednesday, August 22, 2001
Image Information last updated on Monday, January 24, 2005