Phytologia 28(5): 481 (1974).

Basionym: Parmelia schiffneri Zahlbr., Smith. Contr. Bot. 1974: 481. 1909: 167

Type: Brazil, Sao Paulo, Barra Mansa, Itapecirica, Schiffner (W - lectotype).

Coordinates:

Thallus: closely adnate, light mineral gray, 1-2 cm broad; lobes dichotomously branched, sublinear, 0,3-0,5 mm wide, the margins densely bulbate ciliate, the bulbae becoming apically branched; upper surface plane, shiny; lower surface black, densely rhizinate, the rhizines moderately to densely branched. Apothecia numerous, adnate, 1-1,5 mm in diameter, the amphitecium coronate; spores 8, 5 X 12 µm, bicornute with short upturned tips.

Photobiont: Data lacking.

Chemistry: Cortex K+ yellow, medulla K-, C+ rose, KC+ red, P-, atranorin and gyrophoric acid.

Ecology: on bark and mosses on trees in cerrado vegetation.

Distribution type: Brazil.

Note: This very small lichen is quite similar to Bulbothrix semilunata and is separated from it essentially by the presence of gyrophoric acid. It is still known only from the type collection.