Observation 12288: Aspicilia cuprea Owe-Larss & A. Nordin (207)
When: 2007-08-24
Herbarium specimen reported

Notes: crust lichen, on granitic rock
THALLUS: medium tan to grayish-tan, convex-areolate, K+ yellowish turning orange-red and forming star-shaped clusters of needle-like crystals under microscope (norstictic acid)
MEDULLA: white
ALGAE: green
APOTHECIA: ~1 per areole, sunken, disk black, often densely tan pruinose, epihyenium brown, hymenium clear, hypothecium clear, asci K/I- thickened tip, paraphyses narrow & anastomosing & strongly moniliform
SPORES: 8 per ascus, elliptical, smooth, around 20-25 × 12-14 µm, clear, simple

Clear ID based on norstictic acid, spore size, moniliform paraphyses, brown epihymenium. Apparently quite common in southern Caifornia mountains.

Images

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at 10x
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at 30x
24748
apothecial section, in water, at 100x
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apothecial section, in water, at 100x, cross-polarized
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apothecial section, in K, at 100x, after a few seconds
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apothecial section, in K, at 100x, after a few minutes
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norstictic acid crystals, in K, at 1000x

Proposed Names

87% (1)
Eye3 Eyes3
Used references: Nash’s Sonoran Flora
Based on microscopic features
Based on chemical features: norstictic acid

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2008-10-10 16:55:14 CDT (-0400)
Last modified: 2008-10-10 16:55:14 CDT (-0400)
Viewed: 37 times, last viewed: 2016-10-24 20:52:07 CDT (-0400)