Thompson, J., 1997. American Arctic Lichens: The Microlichens.
Thallus of grouped or contiguous areolae 1.5 or 2.5 mm broad, convex to nearly globulose; cortex very thin, 8-15 µm thick; underside dark.
Apothecia mostly 2-8 per areola, deeply immersed; margin swollen and elevated; proper exciple distinct, 15-20 µm, increasing upward to 35-50 µm; disk dark brown, round; hypothecium gray; epihymenium dark brown; hymenium 135-170 µm, I+blue or reddish; paraphyses slender, less than 2 µm, tips to 3 µm; spores very numerous, narrowly ellipsoid, 4-5 X 1.5-1.8 µm.
Reactions: K—, C—, P—.
This species grows on granitic rocks, sometimes over other lichens. It is known from Finland, Greenland, Austria, and Denmark. It is a little-known species.
The name of the species is derived from a resemblance to Pyrenopsis.