Observation 72628: Rhizoplaca chrysoleuca (Sm.) Zopf

When: 2011-07-25

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

Who: Byrain

Specimen available

Growing on an old stone fence along a quiet side street.


It was attached to the substrate with spider webs.

Proposed Names

28% (1)
Recognized by sight
84% (1)
Recognized by sight: sort of Lecanora like, but only attached at a single (broad) point in the center, making this technically an “umbilicate” foliose lichen instead of crustose like Lecanora. The yellow/orange apothecia make it R. chrysoleuca. The other common one has grayish-greenish apothecia, R. melanopthalma. They have virtually the same geographic distribution, so if you looked for it long enough, you’d probably find both species.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thanks Jason.
By: Byrain
2011-07-25 21:08:43 PDT (-0700)

I’ll keep my eyes open for the lookalike.

Created: 2011-07-25 16:57:01 PDT (-0700)
Last modified: 2011-07-25 20:55:21 PDT (-0700)
Viewed: 25 times, last viewed: 2017-06-09 16:04:07 PDT (-0700)
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