When: 2021-04-05

Collection location: Mount Laguna, San Diego Co., California, USA [Click for map]

Who: Cindy Trubovitz (Trubo)

Specimen available

This observation is for the fruticose lichen in center. On bark, thallus 1 cm across, very few soredia could be seen. Cortex and medulla K-


After moistening.

Proposed Names

31% (2)
Used references: Field Guide to CA Lichen
61% (2)
Used references

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= Observer’s choice
= Current consensus


Add Comment
By: Jason Hollinger (jason)
2021-05-04 12:39:31 PDT (-0700)

Young Evernia don’t necessarily have contrasting sides yet. But I think the dull texture and maculae suggest Evernia more than Ramalina. There is probably a chemical test to verify it… Right, Evernia prunastri has evernic acid which should give a strong C+r reaction in the medulla. Ramalina farinacea has protocetraric and/or norstictic acids or nothing, C- in all cases.

Added photo,
By: Cindy Trubovitz (Trubo)
2021-05-04 12:28:04 PDT (-0700)

I moistened it and it does look more Evernia-like now to me. Previously I was looking for a more contrasting white underside that seemed lacking but that may be due to it’s dryness and age. Thanks Jason!

Could this be a young Evernia prunastri?
By: Jason Hollinger (jason)
2021-05-03 22:47:39 PDT (-0700)