When: 2008-10-08

Collection location: San Gabriel Mountains, Los Angeles Co., California, USA [Click for map]

Who: Jason Hollinger (jason)

Specimen available

Notes:
on north-facing mossy granite, at about 3000’, on lower Big Tujunga Canyon Road just below the Angeles Forest Highway
THALLUS: endolithic
APOTHECIA: forming umbilicate clusters, lecidene; rim black, even with disc, smooth, thin, white rough underneath; disc black, distinctly white pruinose, flexuous to plane, to 2 mm wide; epihymenium green-brown, K-; hymenium clear, K/I+ intense blue making it impossible to see asci; hypothecium light brown (dark in thick section); paraphyses thin, hyaline, occ. branched, strongly conglutinated, swollen tips in some sort of gelatinous substance making them indistinct; asci beats me — saw one or two without any real K/I+ blue tip, perhaps they really are Lecidea-type
SPORES: 8 per ascus, clear, simple, oblong, (6.8)7.8+/-0.7(9.4) x (3.2)3.9+/-0.5(5.0) µm (Q=(1.6)1.9+/-0.2(2.5)) (N=19)

Images

apothecia, at 10x
apothecia, at 30x
apothecial section (missing exciple), in water, at 100x
ascus with spores, in water, at 1000x

Proposed Names

87% (1)
Used references: Nash’s Sonoran Flora
Based on chemical features

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= Observer’s choice
= Current consensus

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