Kongl. Sv. Vet.-Akad. Handl. 7, 4: 282 (1929).
Protolog: Data lacking.
Type locality: France, Puy-de-Dôme, Arlane, près d.Ambert, 1900, Brevière (Hb. B. de Lesdain - holotype, probably lost). Provence-Alpes-Côte d'Azur, Var, La Courtines près Ollivules, sur rochers volcaniques, May.1923, de Crozals (UPS - neotype). Designated by Knudsen & Kocourková (2012: xx).
Barcode: Data lacking.
Coordinates: Data lacking.
Thallus: arising from an endosubstatic hypothallus, sometimes with well-developed rhizohyphae or expanding through vegetative division. Thallus indeterminate, of dispersed or contiguous areoles, or dispersed or crowded squmules, 0.2-0.6(-1.5) mm diam., < 0.2-0.5 mm thick. Areoles angula to irregular or round, broadly attached, sometimes with a single apothecium the thallus becoming reduced to a pseudothalline margin forming verrucae. Areoles becoming squamulose and lobulate in well-developed specimens, with a distinct lower surface, the elongated mycelial base broad (gomphate) or forming a stipe. Upper surface pale to dark brown, epruinose, matt. Lacking either an epinecral layer or syncortex of polysaccharides. Lower surface pale brown or white in well-developed areoles, or darkened by substrate interaction. Cortex relatively thin, 20-35 µm thick, of paraplectenchymatous cells mostly 2-4 µm diam.; upper layer brown to 10 µm thick, lower layer hyaline. Algal layer 50-100 µm, continuous, sometimes with edges of stratum uneven, algal cells mostly 10 µm diam. Medulla up to 100 µm thick, of intricate thick-walled hyphae, mostly 3-4 µm thick, continuous with attaching hyphae. Apothecia 1-12 per areole or squamule
Chemistry:
Ecology: Data lacking.
Molecular data: Genbank
Distribution: Data lacking. Database
Note: Data lacking.
In IF: K. svenska Vetensk-Akad. Handl., ser. 3 7(no. 4): 282 (1929).