Nomencl. Bot., Edn 3: 328 (1797).

Thallus: Pseudopodetia branched at base with erect braches, in upper part with short branchlets, at base decorticated, medially in different stages of decortication with a woolly to fibrous surface and in the upper part corticated, sometimes dorsiventrally flattened, at base ochraceous but otherwise grey, yellowish-white, greenish-white or creamy-white, sometimes in upper part dirty grey or even purplish, 10 - 190 mm long and 1.0 - 4.0 mm thick at base. Phyllocladia coralloid, sometimes slightly palmate, obtuse, becoming shorter towards the apex of the pseudopodetium and concolorous with it. Cephalodia sacculate, with an irregular surface, scattered, grey, becoming concolorous with the pseudopodetium after a long time of conservation, to 2.5 mm in diameter; cortex a palissadic plectenchyma. Apothecia terminal on the pseudopodetium and its subterminal branchlets, to 4.0 mm in diameter; disc brown to brownblack, at first convex, becoming semiglobose; margin whitish to red-brown; hymenium 60 - 110 µm thick; hypothecium 70 - 160 µm thick, compact and yellowish-brown; central cone loosely hyphose and more pale; pseudoexcipulum composed of a palisadic plectenchyma, 60 115 µm thick. Ascospores 23 - 60 / 2.3 - 4.5 µm, 2 - 5 - 8 septate. Pycnidia present, subterminal; conidia 8.0 - 9.0 / 0.8 µm (Boekhout 1982: 502).

Photobiont: Green alga.

Chemistry: K+ yellow, P+ faintly yellow, atranorin, perlatolic acid (Boekhout 1982: 502). Galactomannan B (Huneck & Yoshimura 1996: 132).

Ecology: In open habitats, growing either on volcanic, quartzitic, sandstone or limestone debris or rocks, or on stony soil. In the tropics up to 4500 meter, often together with Cora pavonia, Ditrichum gracile, Pilopogon laevis, Stereocaulon strictum var. compressum, Stereocaulon tomentosum (Boekhout 1982: 502).

Molecular data: Genbank

Distribution: Database

Note: