Thallus dorsiventral, heteromerous, foliose, lobate to occasionally subcrustose or subfruticose, loosely to closely attached, saxicolous or terricolous. Lobes 0.1-5 mm diam., short and rounded to linear-elongate, flat to distinctly convex to pulvinate or subpannose. Upper surface brown or brownish-black, with or without isidia, lacking pseudocyphellae and soredia or very rarely sorediate. Photobiont green, . Medulla white, lower surface ± flat to weakly channelled. Rhizinate or not. Rhizines simple or once-branched towards tips. Apothecia lecanorine, sessile to subpedicellate, disc concave to plane or subconvex, eperforate, epruinose, brown or red-brown, matt or shining, margins entire or crenulate-striate. Ascospores 8 per ascus, ellipsoid, colourless, simple. Pycnidia uniform, immersed in upper surface, ostiole black, punctiform ± common in fertile species, rare or absent in non-fertile species. Conidia bifusiform, ± uniform. Chemistry: Cortex blue-green to violet with HNO3, medulla containing orcinol depsides, orcinol depsidones, ß-orcinol depsidones, ß-orcinol depsides and fatty acids.