Observation 102250: Micarea denigrata (Fr.) Hedl.

When: 2011-09-28

Collection location: Castro Crest, Malibu Creek State Park, Los Angeles Co., California, USA [Click for map]

34.0806° -118.7479° 622m

Who: Jason Hollinger (jason)

Specimen available

HABITAT oldgrowth chaparral and conglomerate outcrops at top of high transverse ridge; SUBSTRATE north face of conglomerate cliff; ASPECT shaded; NOTES olive-brown lumpy crust with abundant tiny globose black apothecia, epihymenium dark brown POL- turning briefly reddish in K before clearing, hymenium and hypothecium hyaline, algae and hyphae POL+ clearing in K, C+p fleeting in section, paraphyses hard to separate in water but easy to separate in K, asci tiny with pale KI+blue walls and strongly KI+blue square tip with no sign of channel or other structure?; SPORES 8 per ascus, fusiform, hyaline, smooth, 1-3-septate, 10-12 × 2.5 µm, KI-.


Thallus, at 30x, stacked.
Apothecial section, in water, at 400×.
Apothecial section, in water, at 400x, cross-polarized.

Proposed Names

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Created: 2012-07-20 12:02:57 IST (+0530)
Last modified: 2012-07-20 12:03:00 IST (+0530)
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