Thallus submonophyllous to polyphyllous, dark blue-grey to distinctly bluish when dry, dark olive-greenish or leaden when wet, 2-10 cm diam., attached to substrate by scattered tufts of hairs, loosely adnate, corticolous, rarely saxicolous. Lobes rather papery, orbicular to elongate, apices rounded, 1-5 mm broad, margins entire to sublobulate. Upper surface smooth to somewhat roughened, never wrinkled-plicate, without isidia. Lower surface concolorous with upper surface, not tomentose. Apothecia common, often abundant, scattered, sessile to short pedicellate, laminal, 0.2-2.5 mm diam., disc concave to plane or subconvex, pale brown to dark red-brown, matt, proper exciple rarely seen, thalline exciple entire or with occasional, small, microphylline outgrowths, concolorous with thallus or pale white or buff. Ascospores ellipsoid to subfusiform, apices pointed, submuriform, 3-6 transverse septa and 1-2 longitudinal septa, 14-26 × 6-9 µm.