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When: 2021-07-31

Collection location: Joshua Tree National Park, California, USA [Click for map]

Who: Cindy Trubovitz (Trubo)

No specimen available

Notes:
Apothecia raised, thick-walled. Considered C. citrina but I think color may exclude this species (also can’t see obvious soredia from photo).

Images

Proposed Names

46% (2)
Used references: Lichens of North America, Field Guide to CA Lichen

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= Observer’s choice
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Comments

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Good idea, considering C. citrina
By: Jason Hollinger (jason)
2021-08-04 11:25:29 MST (-0700)

I always forget. But yes, you really do need to check the spores to be certain. Some percentage of specimens always turn out to surprise me with their citriform spores. I don’t think C. citrina has soredia. My experience is that they essentially look exactly like C. rosulans, perhaps a bit yellower or less orange? Make @J-Dar has better experience in southern California and can give better tips for guessing without microscopy.