Phytologia 28: 489 (1974).

Basionym: Parmelia taractica Kremp., Flora, Regensburg 61: 439 (1878).

Type locality: Argentina, Lorentz and Hieronymus s.n. (M - lectotype; G, W - isolectotypes).

Type locality coordinates: Data lacking.

Molecular barcode: Data lacking.

Thallus: adnate to loosely adnate on soil or rocks, 6-12 cm broad, yellowish green; lobes sublinear, 1-4 mm wide, dichotomously branched, laciniate with age, the laciniae plane, separate to imbricate; upper surface continuous, emaculate to very weakly white- maculate, shiny, isidia and soredia lacking; medulla white; lower surface plane, pale brown, moderately to densely rhizinate, the rhizines pale brown, simple to furcate, 0,5-1 mm long. Pycnidia common; conidia bifusiform, 0,5 x 5-7 µm. Apothecia common, substipitate, 2-8 mm in diameter; spores 4-5 x 8-9 µm..

Photobiont: Data lacking.

Chemistry: Salazinic acid, consalazinic acid, lobaric acid (+), usnic acid, undetermined fatty acids (+-).

Ecology: On soil and rocks.

Distribution: Colombia, Bolivia, Argentina.