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When: 2008-10-08

Collection location: San Gabriel Mountains, Los Angeles Co., California, USA [Click for map]

Who: Jason Hollinger (jason)

Specimen available

on north-facing mossy granite, at about 3000’, on lower Big Tujunga Canyon Road just below the Angeles Forest Highway
THALLUS: broad rounded lobes, fairly well-appressed (but still possible to remove with care), sparse immersed pycnidia, lower surface brown
MEDULLA: white, K+ yellow to reddish-orange (some yellow remaining at edges)
APOTHECIA: abundant


Result of K test, after about half a minute to let it run to completion.
Pycnidia, at 30×.

Proposed Names

58% (1)
Used references: Nash’s Sonoran Flora
Based on chemical features: K+ yellow to reddish-orange (instead of yellow immediately turning blood red)

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= Observer’s choice
= Current consensus


Add Comment
Great Pictures!
By: Daniel B. Wheeler (Tuberale)
2008-10-09 01:52:49 PDT (-0700)

I’m going to have a lot of fun with lichens, I think. Those color changes are awesome!