Mycotaxon 34, 2: 562 (1989).

Protolog: Data lacking.

Protolog type data: Data lacking.

Type: [Sandstone ledges, about 5 km E of Holy Forest (NW of Thohoyandou), elev. 1000 m, Venda, South Africa, Grid 2230 CD, Hale 79148 (US, holotype).].

Type locality: Data lacking.

Type locality coordinates: Data lacking.

Molecular barcode: Data lacking.

Thallus: tightly adnate on rock, rather firm, 2-6 cm broad; light yellowish green but darkening at the center; lobes sublinear, 0,4-1 mm wide, elongate, dichotomously branched, separate to contiguous, laciniate marginally with age, the laciniae dichotomously branched, 0,2-0,4 mm wide; upper surface continuous, emaculate, shiny, moderately isidiate, the isidia cylindrical, 0,06-0,13 mm in diameter, 0,1-0,3 mm high, the tips syncorticate, brownish, simple or sparingly branched; medulla white; lower surface plane, dark brown at the tips but blackening at the center, shiny, moderately rhizinate, the rhizines black, simple, 0,1-0,2 mm long. Pycnidia rarely developed; conidia bifusiform, 0,5 x 5-6 µm. Apothecia unknown .

Photobiont: Data lacking.

Chemistry: Stictic acid, constictic acid, norstictic acid, usnic acid.

Ecology: Data lacking.

Distribution: Venezuela, Brazil, Paraguay. Database