Notes: HABITAT non-calcareous rock outcrop; SUBSTRATE rock; ASPECT shaded; NOTES thallus rimose white thin near margin, prothallus thin and black but distinct, cortex K+y C-? KC-? UV-, medulla K+y C+r turning orange KC+r to rose UV~white 350nm UV- 375nm, apothecia immersed at first becoming large and apparently lecanorine and superficial in age, rim thalline concolorous, disk black shiny flat to slightly convex epruinose, epihymenium red-violet POL- turning violet in K, hymenium red-violet turning violet in K POL-, hypothecium red-brown turning orange in K POL+, medulla POL+, paraphyses simple thick conglutinated but easily separating in K, asci walls K/I-, asci tips thick K/I+ apparently without canal?; SPORES 8 per ascus, simple, hyaline, smooth, ellipsoid, 8-10 × 5-6 µm.
Determined by K. Knudsen, despite the highly unusual C+ red reaction. I can’t find any mention of this chemistry for Tephromela atra anywhere in my literature. Yet they split other species off based on similar differences in chemistry. What gives?
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Created: 2012-07-28 03:00:48 CEST (+0200)
Last modified: 2012-07-28 03:00:52 CEST (+0200)
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