Thallus unattached, small-foliose, dichotomously branching, dorsiventral when wet, rounded into a ball when dry. Upper surface smooth, yellow-green (usnic acid). Lower surface pale yellow, smooth or wrinkled, lacking any organs of attachment. Apothecia rare, sessile, laminal. Ascospores colourless, simple, 8 per ascus.

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.

Thallus heteromerous, foliose, lobate, closely to loosely attached, saxicolous or terricolous. Lobes very variable, broad and rounded to narrow-elongate, laciniate. Upper surface smooth, occasionally wrinkled, matt, shining or maculate, sorediate or not, isidiate or not, yellowish or yellowish-green (usnic acid in upper cortex). Medulla white. Lower surface pale tan or brown or black, smooth or wrinkled, matt or shining, ± rhizinate. Rhizines rather sparse, simple, concolorous with lower surface, or black. Apothecia present or not, sessile to subpedicellate, disc red-brown, imperforate with a ± prominent margin, entire or crenulate, concolorous with thallus. Spores colourless, simple, ellipsoid, 5-12 × 3-6 µm, ± uniseriate, 8 per ascus. Pycnidia frequent in some fertile species, rare or absent in sterile species, punctiform, immersed, black or red- brown, minute.