Thompson, J., 1997. American Arctic Lichens: The Microlichens.
Thallus white, poorly developed, of scattered high areolae, the areolae convex, round, to 1.5 mm broad; over part of thallus a trace of an orange thallus may be discerned. The fertile areolae have an almost columnar shape, bearing single apothecia to the top; margin black, 1+ bluish; cortex irregular; disk “composite” with an umbo or several protuberances within, to 1.5 mm broad, black, sometimes slightly pruinose; hypothecium hyaline; epihymenium olive-brown, HCI+ green; hymenium 100 µm, 1+ blue turning wine-red; paraphyses slender, septate, not moniliform; spores 8, ellipsoid, 17-22 x 10 µm.
Reactions: thalloid exciple I + blue (fugacious). K—,C-,P-.
This spccies grows on acid rocks. It has rarely been collected, and its range is uncertain. A good photograph is in Lynge (1940, Plate II, Fig. 2).