Observation 12226: Xanthoparmelia mexicana (Gyelnik) Hale
When: 2008-10-08
Herbarium specimen reported

Notes: 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
APOTHECIA: none

Images

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

Proposed Names

87% (1)
Eye3 Eyes3
Used references: Nash’s Sonoran Flora
Based on chemical features: K+ yellow immediate turning blood-red

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2008-10-09 02:32:37 CDT (-0400)
Last modified: 2008-10-09 02:32:37 CDT (-0400)
Viewed: 102 times, last viewed: 2016-10-27 14:35:24 CDT (-0400)