Thallus 1-4 (-6) cm diam., rather compact, sometimes coalescing and forming extensive patches. Lobes 2-5 mm wide, appressed, separate but ± overlapping towards the centre, rounded, often ± indented, axils rounded but not markedly sinuose, recurved at the tips. Upper surface grey or grey-green, smooth, ± matt; marginal cilia very sparse, usually absent. Soralia laminal, irregularly spreading, ± diffuse, erose, mainly on or near the lobe ends, concolorous or slightly darker than the thallus. Lower surface black, ± rhizinate to margins, rhizines simple, forked or ± dichotomously branched.
Anamorph: no information available.
Teleomorph: ascomata apothecia, rare; disc to 6 mm diam. Thalline margin ± sorediate, often recurved. Ascospores 11-16 × 8-10 μm, broadly ellipsoidal to almost spherical.
Chemistry: cortex K+ yellow; medulla C+ pink-red, K–, KC+ red, Pd–, UV- (atranorin, gyrophoric acid [major], lecanoric acid [minor] and related accessory substances [including those in the hiascic acid group]).
Assessed by Woods & Coppins (2012) as of Least Concern.
Hypotrachyna afrorevoluta often occurs with H. revoluta; it may be distinguished most easily by the coarse granular rather than farinose soredia.
Common on wayside and woodland trees and shrubs, more rarely on weakly acidic rocks and walls in inland and maritime situations, and widely distributed on bark in a range of conditions from nutrient-poor to nutrient-enriched.