Thallus lobate, spreading, to 8 cm diam., loosely attached, fragile, corticolous. Upper surface blue or brown or variegated, smooth, wrinkled or folded, margins lacerate to proliferate, occasionally phyllidiate. Phyllidia squamiform, dissected and sometimes proliferating, marginal or along laminal cracks. Lower surface brownish-tomentose, pale and glabrous towards margins. Apothecia very pale brown to reddish, ± reniform with a 1 mm wide, entire thalline margin. Ascospores colourless to pale reddish-brown, 1-septate, 16-18 × 4-6 µm. Chemistry: Nil.