Thompson, J., 1997. American Arctic Lichens: The Microlichens.
Thallus a thin layer on the stone, ocher-yellow, without black border, with globose cells in the hypothallus. Perithecia immersed, only the tip projecting, 0.17-0.3 mm broad; exciple brown-black; involucrellum black, present at the upper part of the perithecium and spreading a short distance only; gelatin 1+ red; spores hyaline, ellipsoid, 1-septate, one end smaller than the other, the center often narrowed, 32-42 x 14-23 µm.
This species grows on calcareous rocks. It is known from the Alps in central Europe, there growing in the alpine and subalpine. A recent collection from Bathurst Island by Brodo and Ireland (19,278 CANL) appears to be this species.