Observation 318810: Lecanora pacifica Tuck.

When: 2018-05-25

Collection location: Santa Barbara Co., California, USA [Click for map]

34.4767°N 119.9988°W 216m [Click for map]

Who: J-Dar

Specimen available
Collection number: Jason Dart 1003

Notes:
On smooth bark of younger coast live oak (Quercus agrifolia) trunk, about a mile from the ocean above El Capitan State Park.

Thallus light grey, rimose crust, K+Y. Apothecia are pale, from greyish to light peachy orange, always plane, with a persistent raised white thalline margin that is K+Y. Epihymenium is dark brown with small POL+ yellowish crystals soluble in K. Amphithecium with a pocket of large POL+ crystals that are not soluble in K. Amphithecial cortex present.

Spores 8/ascus, simple, hyaline, broadly ellipsoid. About 13.5×8µm.

Images

POL+

Proposed Names

57% (1)
Based on microscopic features: Epihymenial and amphithecial POL+ crystals
Based on chemical features: K+Y

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= Observer’s choice
= Current consensus

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Created: 2018-06-06 03:36:22 CEST (+0200)
Last modified: 2018-06-06 03:36:30 CEST (+0200)
Viewed: 11 times, last viewed: 2019-01-18 16:08:00 CET (+0100)
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