Hypoxylon canker, Annulohypoxylon thouarsianum var. thouarsianum (Xylariales: Xylariaceae) - 1427037

Hypoxylon canker
Annulohypoxylon thouarsianum var. thouarsianum (Lév.) Y.M. Ju, J.D. Rogers & H.M. Hsieh

Descriptor: Sign
Description: a sapwood decay fungus that is also commonly isolated from Sudden Oak Death - affected oak trees, although it is also found on trees not affected by SOD. The presence of the half-dome-shaped fruiting bodies are indicative of advanced stages of SOD. Newly formed fruiting bodies are olive greenish or shiny black and release powdery green spores upon contact. Older fruiting bodies are dull black.
Image type: Field
Image location: United States

Photographer Information

Name: Joseph O'Brien
Organization: USDA Forest Service
Country: United States

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Image Number: 1427037

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Image Citation:(?) Joseph O'Brien, USDA Forest Service, Bugwood.org

Node Affiliation: University of Georgia

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Image uploaded on Monday, January 01, 1990
Image Information last updated on Tuesday, October 05, 2010