Thompson, J., 1997. American Arctic Lichens: The Microlichens.
Thallus thick, of contiguous convex areolae to 0.8 mm wide, light or dark orange oxydate, partly shining, eroded. Apothecia erumpent and remaining broadly attached, to 0.7 mm; proper exciple 20 μm, widening to 40 μm above; disk black, flat to high convex, thalloid margin soon disappearing, cellular but cells poorly defined; hypothecium hyaline; epihymenium dark brown; hymenium 80-85 μm, hyaline, 1+ blue; paraphyses 3-3.5 μm, tips 5.5-7 μm and very dark; asci clavate; spores of bicincta-type with a very much narrowed waist and 2 bands of pigment, one across each of the 2 cells, a porus also present, 13-17 x 8.5-10.5 μm.
This species grows on calcareous rocks. Thus far it is known only from Disko Island, Nugssuaq Peninsula, and S0ndre Str0mfiord, Greenland. It should be sought in the Canadian Arctic.