Thallus bright yellowish or lemon-yellow, whitish marginally, felted or woolly, spongy, to 5 mm thick and to 5 cm diam., spreading irregularly or ± orbicular, without soredia or isidia. Apothecia numerous or lacking, superficial or apical, subpedicellate, to 1 mm diam., densely white-pruinose, disc black below pruina. Ascospores fusiform, straight or curved, 6-septate, 25-30 × 5-6 µm. Chemistry: Schizopeltic and lepraric acids and two unidentified compounds.

Thallus white to greyish-blue-white, soft, felted, in fine strands, 0.2-0.4 mm thick and 4-8 mm tall, and to 10(-15) cm diam., orbicular or irregularly spreading, without soredia or isidia, corticolous, or muscicolous. Apothecia emergent, lateral and terminal on strands, frequent to absent, subpedicellate, subglobose, disc concave to plane or subconvex, black or brown-black, distinctly white-tomentose, 0.5-1(-2) mm diam. Ascospores fusiform with pointed ends, 5-septate, locules rounded, slightly curved 22-30(-34) × 3-8 µm. Chemistry: Lepraric acid.