Thompson, J., 1997. American Arctic Lichens: The Microlichens.
Thallus very thin, arachnoid over moss, white or gray white.
Apothecia adnate, to 0.7 mm broad, black, bare; margin thin, concolorous, disappearing; exciple plectenchymatous, the columnar exterior greenish, interior hyaline; hypothecium hyaline; epihymenium pale bluish or violet-tinged to black, with violet-black granules scattered in it, as in the exciple; hymenium 40-60 µm, hyaline to pale violet, with colored grains in stripes through it, I+ blue turning red; paraphyses coherent, only slightly thicker at tips; asci clavate; spores oblong to ellipsoid, simple, 10-14 X 3-6 µm.
Reactions: K-, C-, P-, I-.
This species grows over moss. It is circumpolar, being known from Bear Island, Siberia, Spitzbergen, Greenland, Scandinavia, and the Northwest Territories.