Thallus ± determinate, lobate at margins, orbicular to spreading, 1-3(-5) cm diam., with a well-defined, brown-black, marginal prothallus, saxicolous. Lobes minute, folded, confluent. Upper surface continuous, minutely and irregularly cracked, not areolate, cracks very fine (×10 lens), smooth, glaucous, whitish or creamish, matt, epruinose, without isidia or soredia. Cephalodia scattered, flattened, rounded, sessile, 2-3 mm diam., radially wrinkled, folded-effigurate, somewhat cracked, yellow-pink, matt. Apothecia sessile, rounded, to 3 mm diam., thalline margin prominent, entire or subcrenulate, matt, disc plane, dark brown to brown-black, matt, epruinose. Hymenium 80-140 µm tall, yellowish above. Ascospores biseriate, ellipsoid, 12-18 × 6-9 µm. Chemistry: Cortex K-, C+ rose; medulla K- or + pale yellow, C+ rose, Pd-.