Observation 12937: Physcia biziana (A. Massal.) Zahlbr.

This is a very common Physcia in these mountains, on both oak bark and less common on granite. Recognize by abundant apothecia and heavy coarse pruina.

Foliose lichen, on granite, fairly exposed, with Lecanora muralis.
THALLUS: light gray, coarsely white pruinose, K+y, white underneath with white simple rhizines
MEDULLA: white, K-
APOTHECIA: lecanorine, black, densely coarsely white pruinose, substipitate, to 2 mm wide, flat

Proposed Names

87% (1)
Eye3 Eyes3
Used references: Nash’s Sonoran Flora
Based on chemical features: Cortex K+ yellow, medulla K-.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2008-10-20 00:00:41 CDT (-0500)
Last modified: 2008-10-20 00:00:41 CDT (-0500)
Viewed: 103 times, last viewed: 2017-06-05 03:55:13 CDT (-0500)