Description: Thallus crustose, episubstratic, orange-yellow, areolate; areoles angular or sometimes sublobulate, convex, contiguous, the surface smooth, corticate, the cortical cells strongly gelatinized, irregularly arranged, with up to 2 µm wide and up to 15 µm long, tubular lumina, overlain by a colourless, 15-20 µm thick epinecral layer; lower surface attached to the substrate by long hyphal strands. Algal layer continuous. Apothecia zeorine, sessile, up to 1.5 mm across, with a dark orange to orange-brown, flat, smooth, disc and a thin, orange-yellow margin. Thalline exciple finally limited to the basal part of apothecia; proper exciple of radiating hyphae with moderately thick walls and long and narrow lumina; epithecium orange-brown, K+ red; hymenium colourless; paraphyses simple or sparingly branched, 1-2 µm thick at mid-level, the apical cells slightly thicker. Asci 8-spored, clavate, Teloschistes-type. Ascospores 1-septate, not clearly polarilocular but the septum often incomplete, hyaline, pyriform, 12-17 x 5-7.5 µm. Pycnidia orange-yellow, immersed. Conidia bacilliform. Photobiont chlorococcoid. . Spot tests: thallus and apothecia K+ red, C-, KC-, P-. Chemistry: thallus and apothecia with anthraquinones, plus caloploicin, vicanicin and isofulgidin.
Note: a xeric subtropical lichen found on base-rich clay soil in clearings of grasslands and shrublands, common in Macaronesia and also known from North Africa; in Europe only known from a single station in central Sardegna (Gennargentu Massif near Desulo).
Growth form: Crustose
Substrata: soil, terricolous mosses, and plant debris