in Elix, Johnston & Armstrong, Bull. Br. Mus. nat. Hist., Bot. 15(3): 251 (1986).

Synonyms: Index Fungorum

Type: xxx.

Thallus: tightly adnate, 5-7 cm broad, yellowish green but darkening at the center; lobes sublinear, 0.2-0.7 mm wide, contiguous to imbricate, the tips humping up, black rimmed; upper surface continuous, emaculate, shiny moderately isidiate, the isidia cylindrical (Figure 15b), 0.05-0.07 mm in diameter, 0.1-0.3 mm high, the tips syncorticate, darkening, mostly unbranched; medulla white; lower surface plane; black, shiny, sparsely to moderately rhizinate, the rhizines black, rather stout, 0.2-0.3 mm long. Pycnidia unknown. Apothecia unknown.

Photobiont: Trebouxia.

Chemistry: Norstictic acid, connorstictic acid, usnic acid.

Ecology: on rock.

Molecular data: Genbank

Distribution: Database

Note: