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, tightly appressed (nearly impossible to remove with knife), lower surface brown, abundant subglobose to coralloid isidia
MEDULLA: white, K+ yellw to pure blood red within seconds


Isidia, at 30×.
Isidia, at 30×.
Result of K test in medulla after only a few seconds.

Proposed Names

87% (1)
Used references: Nash’s Sonoran Flora
Based on chemical features: K+ yellow immediate turning blood-red

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= Observer’s choice
= Current consensus


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