Observation 81605: Physcia (Schreb.) Michaux

When: 2011-11-06

Collection location: Stebbins Cold Canyon Reserve, Solano Co., California, USA [Click for map]

Who: Byrain

No specimen available

Growing on the bark of a living oak tree. I collected a bit of it to work on when I have time.

Proposed Names

28% (1)
Recognized by sight
55% (1)
Recognized by sight
Used references: CA Lichens

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Three choices
By: Jason Hollinger (jason)
2011-11-07 04:22:50 CDT (-0400)

For small, dull/pruinose, pale, gray, non-sorediate, non-isidiate, non-lobulate things on bark on the west coast:

Physcia aipolia – conspicuously mottled white surface, medulla K+y
Physcia stellaris – mottled or not, lightly pruinose or not, medulla K-
Physcia biziana – heavily pruinose (obscuring surface), medulla K-

Since there is little mottling and little pruina, P. stellaris looks best from where I sit.

Created: 2011-11-07 03:53:15 CDT (-0400)
Last modified: 2017-11-11 22:21:07 CST (-0500)
Viewed: 144 times, last viewed: 2017-11-20 08:58:41 CST (-0500)
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