Thallus greenish grey to grey-green, white to dark blue-grey, of scattered to crowded, uneven granular areoles. Areoles 0.08-0.25 mm diam., but scattered or marginal areoles often ± ﬂattened and efﬁgurate and up to 0.4 mm diam.; soralia c. 0.2-0.4 mm diam., at ﬁrst discrete, sometimes becoming conﬂuent. Soredia farinose to ﬁnely granular, grey-green to dark blue-green.
Anamorph: no information.
Teleomorph: ascomata apothecial. Apothecia dark green-grey to green-black, rarely pale, or pinkish (in extreme shade), ﬂat to slightly convex. Hymenium c. 40-50 µm tall. Asci 30-50 µm tall. Ascospores 7-9.5 × 2.5-4 µm.