in Knox & Brusse, J. S. African Bot. 49, 2: 147 (1983).

Synonyms: Index Fungorum

Type locality: Kenya [Kenya colony], Mt. Kenya, Teleki Valley, Hedberg s.n., Flora Africana 1705 (UPS - holotype; US - isotype).

Type locality coordinates: 0°9'3?S, 37°18'27?E; -0.150833, 37.3075.

Molecular barcode: Data lacking.

Thallus: free growing on pebbles and soil, soft, pulvinate,3-10 cm broad, dark yellowish green and blackening with age; lobes linear-elongate, almost completely terete, 0.5-1.5 mm wide , brown or mottled brown at the tips; upper surface continuous, emaculate, shiny, isidia and soredia lacking; medulla white; lower surface plane, mottled brown or black, rugulose, very sparsely rhizinate, the rhizines black, coarse, 0.2-0.7 mm long, concentrated in small patches. Pycnidia unknown. Apothecia unknown (Hale 1990: 98).

Photobiont: Trebouxia spec.

Chemistry: Salazinic acid, norstictic acid (trace), usnic acid.

Ecology:

Molecular data: Genbank

Distribution: Database

Note: The species has been considered as a synonym of X. kiboensis by Krog & Swinscow (1987: 428) but resurrected by Hale (1990: 98):