Mycotaxon 34, 2: 561 (1989).

Synonyms: Index Fungorum

Type: Chile, Juan Fernandez Islands, Masafuera, Cordon Barril, C. and I. Skottsberg 90, 1 March 1917 (NY - holotype; US - isotype).

Thallus: adnate on rock, rather brittle and subpulvinate, 3-4 cm broad, dull yellowish green; lobes sublinear, 0,6-1,2 mm wide, rather short and irregularly dichotomously branched, brown rimmed, imbricate; upper surface continuous, emaculate, shiny, sorediate, the soralia subterminal, capitate, 0,5-1 mm in diameter; medulla white; lower surface plane, dark brown at the tips but black at the center, shiny, rugulose, moderately rhizinate, the rhizines black, simple, 0,2-0,4 mm long. Pycnidia and apothecia lacking.

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

Ecology: On rock.

Molecular data:

Distribution: Chile: Juan Fernandez

Photobiont: Trebouxia.

Chemistry:

Ecology:

Molecular data: Genbank

Distribution: Database

Note: