When: 2011-07-07

Collection location: Truckee, California, USA [Click for map]

Who: Byrain

No specimen available

Growing on a boulder found at the perimeter of a marsh.


Proposed Names

28% (1)
Recognized by sight
61% (2)
Recognized by sight: Definitely in the R. geographicum group with the pale yellow areoles and inset black lecideine apothecia. R. lecanorinum differs from the typical stuff by having “crescent-shaped areoles”. The one in the first photo could be it. (Also, R. lecanorinum has greenish epihymenium instead of reddish, but the spores are nearly the same.)

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= Observer’s choice
= Current consensus


Add Comment
R. geographicum
By: Byrain
2011-07-26 07:47:46 CDT (-0400)

I thought it may be in this group, the typical variety was extremely common where this was found. Thanks again.