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Hypoxylon Cankers on Dead Oak Tree Branch

Annulohypoxylon thouarsianum

Description:

Annulohypoxylon thouarsianum, 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. www.forestryimages.org

Habitat:

Dead oak tree branch along Crystal Springs Trail in Huddart County Park, Woodside, CA.

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misako
Spotted by
misako

San Mateo, California, USA

Spotted on Jan 6, 2013
Submitted on Jan 8, 2013

Spotted for Mission

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