Thallus epiphloeodal, in irregular patches, 1-2(-5) cm diam., continuous or minutely and unevenly cracked, smooth to ± uneven, coriaceous, yellow-brown to dark olivaceous-brown, shining, with scattered, minute, white dots (×10 lens), delimited at margins by a narrow, wavy black line. Perithecia semi-emergent, scattered, discrete, minute, 0.05-0.1(-0.4) mm diam., black, shining, flattened to slightly raised. Ostiole apical, punctiform, minute, grey-white. Ascospores uniseriate, 4-locular, ovoid-oblong to lemon-shaped, central locules larger, often angular, 20.4-35.7 × 6.8-13.6 µm.