Location Summary

Substrate:  on bark of hardwoods, especially Quercus agrifolia (coast live oak) and Lithocarpus densiflora (tanbark oak)

Identification Characteristics

Color:  dark brown to black

Texture:  Fibrous & woody; densely pimpled with perithecia, the tips encircled by a flat, sometimes sunken disc.

Inedible

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Bibliography:  http://www.mykoweb.com/CAF/species/Annulohypoxylon_thouarsianum.html

Photo by Distance Everheart w/ special thanks to the U.C. Berkeley Fungus Fair!