Observation 340417: Pertusaria DC.

white, crackled, crustose lichen

Species Lists


Proposed Names

-27% (1)
Recognized by sight
Used references
73% (2)
Recognized by sight
43% (2)
Recognized by sight

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= Observer’s choice
= Current consensus


Add Comment
I agree with Jason,
By: zaca
2018-10-24 09:44:21 PDT (-0700)

but you have to test it or to do the microscopy.

Looks superficially like Pertusaria velata
By: Jason Hollinger (jason)
2018-10-24 06:28:32 PDT (-0700)

(= Varicellaria velata) Easy test — if so, it will be strongly C+ red. Drop of bleach will turn it red immediately and unambiguously (usually).