TYPE. UNITED STATES. “Granitic rocks, Essex, Massachusetts, found by the late Mr. Oakes! Chester Co., Pa., Dr. Michener!” (Tuckerman 1858).
Description. Lichenized fungus.
Thallus crustose, granular, greenish or yellowish gray; granules round, scattered, or crowded into a thin, chinky crust; hypothallus blackish. Ascomata lecideine apothecia, adnate, 0.15-0.45 mm diam.; disk flat to slightly convex, black; margin thin, black, at length flexuously irregular; hypothecium blackish brown. Ascospores brown, ellipsoid, 3-septate, 12-15 x 4-5.5 μm.
Chemistry. Thallus C+ orange; xanthone.
Substrate and Habitat. Saxicolous on acidic rocks; corticolous or lignicolous.
Distribution. Eastern North America; in North Carolina throughout.
Fink, B. (1935) The Lichen Flora of the United States. University of Michigan Press, Ann Arbor. 426 pp.
Nordin, A. (1999) Buellia Species with Pluriseptate Spores: New and Unrecorded Species in North America. The Bryologist 102(2): 249–264.
Tuckerman, E. (1858) Supplement to an enumeration of North American lichens; Part first, containing brief diagnoses of new species. American Journal of Science and Arts 25: 422-430.