Thallus pale greenish-grey to greyish-white, thick, continuous to minutely areolate-cracked, areolae smooth or minutely verrucose-papillate, matt or shining, in irregular patches, 2-5(-8) cm diam., corticolous. Apothecia biatorine, sessile, immarginate, 0.1-2.0 mm diam., subconvex, matt, scattered or crowded, rounded to deformed through mutual pressure, mustard yellow to ochre yellow, epruinose. Epithecium dense yellow, 17-22 µm thick. Hymenium 60 µm tall, interspersed with yellow pigment. Hypothecium 20-30 µm thick, pale brownish. Asci I+ blue in upper part or whole ascus blue, with a distinct apical tholus (I+ blue). Ascospores straight or slightly curved, narrowly ellipsoid with pointed ends (15-)18-22(-25) × 3.4-5.1 µm.