Thompson, J., 1997. American Arctic Lichens: The Microlichens.
Thallus crustose, thick, to 5 mm thick, chinky-areolate, shining, dirty clay-colored, bearing some apothecia on pedicels. Apothecia to 1.5 mm, adnate, black, tuberculate, flat to becoming nearly globose; exciple with blackish blue-green exterior, interior hyaline, merging with hyaline hypothecium and hymenium; epihymenium also blackish blue-green; hymenium 55-60 μm, lower part pale yellowish, upper part dark blue-green; paraphyses coherent in water, free in KOH, tips to 3-5 μm and dark blue-green; asci clavate; spores nearly spherical, 6.5-8 x 5-6 μm.
Reactions: K—, C—, P—; hypothecium and hymenium 1+ blue.
This species grows on acid rocks. It is known from Spitzbergen and from Ellesmere Island.
This is only dubiously distinct from Lecanora marginata or Lecidella bullata and the type specimens as well as the Ellesmere Island specimens need restudy.