When: 2021-04-05

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

Who: Cindy Trubovitz (Trubo)

Specimen available

Notes:
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-

Images

After moistening.

Proposed Names

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

Please login to propose your own names and vote on existing names.

= Observer’s choice
= Current consensus

Comments

Add Comment
Tricky!
By: Jason Hollinger (jason)
2021-05-04 15:39:31 CDT (-0400)

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 15:28:04 CDT (-0400)

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)
2021-05-04 01:47:39 CDT (-0400)