Genera Lich.: 124 (1872).

Basionym: Psoroma ascociscana Tuck., Amer. J. Arts & Sci., Ser. 2, 25: 424 (1858).

Synonyms: Index Fungorum

Protolog: Data lacking.

Type locality: USA, New Hampshire, Grafton County, very common on trunks in the White Mts., 1843, E. Tuckerman s.n. (FH - lectotype, COLO, FH, UC, US - isolectotypes). Lectotypification by Sheard (2010: 40).

Type locality coordinates: Data lacking.

Barcode: Data lacking.

Coordinates: Data lacking.

Thallus: Data lacking.

Photobiont: Data lacking.

Chemistry: Reactions all negative; secondary metabolites not detected (Sheard 2010: 41). No lichen substances.

Ecology: Data lacking.

Molecular data: Genbank

Distribution: Database

Note: