Mycotaxon 27: 584 (1986).
Type locality: South Africa, Cape Province, 37,4 km NW of Queenstown [Komani] along Highway R30, ca. 1600 m, 8 February 1986 Hale 72025, Grid 3126 AC (US - holotype; LD, PRE - isotypes). Not mentioned in checklist.
Type locality coordinates: Data lacking.
Type locality photo: Data lacking.
Type scan: Data lacking.
Molecular barcode: Data lacking.
Thallus: tightly adnate to adnate on rock, firm, 5-8 cm broad, bright yellow green; lobes sublinear, 0.6-1 mm wide, imbricate and congested, branching into narrow secondary lobes 0.4-0.6 mm wide, appressed to subascending; upper surface continuous, emaculate, dull to shiny, convex, rugose and transversely cracked with age, isidia and soredia lacking; medulla white; lower surface plane to slightly grooved, black, dull, rhizines lacking. Pycnidia and apothecia lacking (Hale 1990: 141).
Photobiont: Probably Trebouxia.
Chemistry: Stictic acid, constictic acid, usnic acid (Hale 1990: 141).
Ecology: On silicious rock.
Distribution type: South Africa: Cape Province, Transvaal.
Taxonomy: Data lacking.
Note: There seen to be no close relatives for this rare lichen. The black lower surface without rhizines and the leathery, crowded lobes are distinctive (Hale 1990: 141).
Consortium of North American Lichen Herbaria
Lichens of the Pacific Northwest