Thallus closely attached to substratum, irregular to ± orbicular, 2-5 cm diam., terricolous or saxicolous. Lobes radiating, 0.3-0.5 mm wide, rarely to 1 mm wide, plane or weakly convex, ± imbricate. Upper surface grey-brown to brown, ± shining, without isidia, pruina or soredia. Lower surface black except for pale extreme lobe tips. Rhizines black, projecting slightly from lobe margins or inapparent. Upper and lower cortex paraplectenchymatous, cells isodiametric with dark brown walls in lower cortex. Medulla of loosely interwoven hyphae, with orange pigment (skyrin) present in lower part. Apothecia abundant, sessile, to 1.5 mm diam., concave to plane, disc red-brown, matt, epruinose, margins persistent, crenulate or lobulate, concolorous with thallus. Ascospores with thick walls and rounded to elongate lumina (-type), 20-26 × 9-12 µm. Chemistry: TLC skyrin and zeorin.