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When: 2021-10-06

Collection location: Palomar Mountain, San Diego Co., California, USA [Click for map]

Who: Cindy Trubovitz (Trubo)

Specimen available

Notes:
Appears to have fallen. Numerous cracks, mostly along the lobe margins with soredia.

Images

Proposed Names

31% (2)
Used references: Field Guide to CA Lichen

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= Observer’s choice
= Current consensus

Comments

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Your right Jason, Thanks!
By: Cindy Trubovitz (Trubo)
2021-10-28 22:26:55 PDT (-0700)

I looked with the dissecting scope and didn’t see any significant side branching of the rhyzines.

Really should be P. barrenoae
By: Jason Hollinger (jason)
2021-10-28 08:33:49 PDT (-0700)

because of the extreme Medterranean habitat of southern California, and the overall morphology: loose lobes, strongly eroded soralia. But the critical character — branching pattern of the rhizines — is not really visible in these photos. Rhizines of P. sulcata should have lots of short, fine, perpendicular sidebranches, a bit like bottle brushes. In P. barrenoae they should be unbranched or at most a couple will be forked.