When: 2008-06-08

Collection location: Plateau above Echo Cliffs, Coconino Co., Arizona, USA [Click for map]

Who: Jason Hollinger (jason)

Specimen available

Notes:
crust lichen, on soil/moss, in shelter of sandstone boulder
THALLUS: squamulose, squamules strongly convex, not to very densely white farinose pruinose, olive green but blackened in some areas, cracked in many places, cortex quite thick
MEDULLA: white
ALGAE: green, in continuous layer under cortex
APOTHECIA: lecideine, black, plane, margin raised at least when young; epihymenium dark gray, K+ violet, POL-; hymenium clear, K-; hypothecium brown; exciple full of inflated gelatinous cells encased in brown pigment with weakly K+ violet gray pigment on surface; paraphyses branched, inflated tips, clear, smooth, rather thick
SPORES: 8 per ascus, acicular to comet-shaped, 15-25 × 3-4 µm, clear, many little bubbles making it impossible to determine number of septae

Outwardly similar to Toninia tristis, however this is pruinose and greenish instead of brown.

Images

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magnification 30x
apothecial section in water at 400x

Proposed Names

58% (1)
Used references: Nash’s Sonoran Flora

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Created: 2008-09-12 22:21:35 PDT (-0700)
Last modified: 2008-09-12 22:21:35 PDT (-0700)
Viewed: 29 times, last viewed: 2019-01-23 00:28:34 PST (-0800)