Thompson, J., 1997. American Arctic Lichens: The Microlichens.
Thallus gray, the center of broad areolae with deep fissures, soft, angular (not lobate), the areolae to 1.5 mm broad, rough-surfaced, becoming convex, and with minutely chinky surface; the margins with the areolae lobate and radiate in a narrow zone, the areolae elongate, convex, and with a distinct black hypothallus around the edge. Apothecia at first immersed, later elevated on the thallus, simple or composite; margin entire or wavy, white or ashy. I-; thalloid margin more or less paraplectenchymatous, its cortex indistinct; disk black, concave or flat; hypothecium unclear; epihymenium brownish; hymenium 125 µm, inspersed, 1+ wine-red; paraphyses coherent, not moniliform; spores 8, ellipsoid, 20-25 x 10-15 µm. Conidia not known.
Reactions: K-.C-, P-, I-.
This species grows on acid rocks, at the type locality on rocks along a streamlet. It is rare, and the only reports are from Cape Humboldt, northeastern Greenland, and a possible locality on Axel Heiberg Island.