Phytologia 28: 489 (1974).

Basionym: Parmelia standaertii Gyeln., Feddes Repert. 36: 164 (1934).

Synonyms: Index Fungorum

Protolog: Data lacking.

Protolog type data: Data lacking.

Type locality: Peru, Departamoneto Libertad, Hacienda dŽAngasmurca, Peru, Standaert s.n. (BP - lectotype; TUR - isolectotype; designated type in Bouly de Lesdain herbarium destroyed).

Type locality coordinates: Data lacking.

Molecular barcode: Data lacking.

Thallus: loosely adnate to nearly free growing on soil, firm, pulvinate, 4-8 cm broad, dull yellowish green, darkening with age at the center; lobes sublinear, 0,8-1,5 mm wide, short, irregularly dichotomously branched, becoming weakly convoluted, contiguous to imbricate, sparsely laciniate with age; upper surface continuous, emaculate, shiny, isidia and soredia lacking; medulla white; lower surface plane, pale brown to brown, moderately rhizinate, the rhizines brown, simple, 0,3-1 mm long. Pycnidia common; conidia bifusiform, 0,5 x 6-7 µm. Apothecia rare, substipitate, 1-3 mm in diameter; spores 5-6 x 9- 10 µm.

Photobiont: Trebouxia.

Chemistry: Stictic acid, constictic acid, cryptostictic acid (trace), norstictic acid, connorstictic acid (+-), usnic acid.

Ecology: Thallus loosely adnate to nearly free growing on soil. It grows as small scattered pulvinate clumps on sandy soil in arid, high elevation localities in the Andes Mountains.

Distribution type: Venezuela, Ecuador, Peru.