Notes:
On decorticated wood of old blue oak (Quercus douglasii) downed trunk.

Thallus greyish, scurfy, K-. Apothecia sessile, plane, with persistent thalline margin concolorous with thallus. Disk black, always epruinose.

Spores Type A development, Physcia-type, with persistent apical thickenings, and weak torus. Average size 18.4×8.6 (n=5).

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