Crustose lichen, on granite.
THALLUS: light tan, areolate, margin somewhat indistinct but a little whiter, K+ yellow slowly turning reddish-orange; cortex very thin clear ragged layer on top, brown layer outside fading into clear inside, evenly thickened, strongly POL+ white clearing mostly in K, K+ red needle-like crystals (norstictic acid); algal layer continuous, thick; medulla white, POL+ white persists in K, K+ weakly yellow
APOTHECIA: relatively few, lecanorine, most superficial; disc black, flat, round; rim raised in most, thalline, even; epihymenium brown, POL-, K-; hymenium clear; hypothecium clear; paraphyses strongly moniliform, unpigmented
SPORES: 4-6 per ascus (several asci, never saw more per ascus), clear, simple, broadly elliptical, with big bubble, around 25 × 15 µm, conidia filiform, (25)28+/-2(34) µm (N=14)
This one looked different, since the apothecia were less abundant and mostly superficial, and there appear to be fewer than 8 spores per ascus. However the conidia (unusually long) and chemistry (norstictic acid major) match A. cuprea.
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|I’d Call It That||3.0||6.43||1||(jason)|
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Created: 2008-10-20 07:15:35 BST (+0100)
Last modified: 2008-10-20 07:15:35 BST (+0100)
Viewed: 89 times, last viewed: 2017-06-05 09:55:44 BST (+0100)