Global occurrence: Antarctic – Antarctica | Oceania – Australasia | Eurasia – Europe | Americas – North America (incl Mexico) | Americas – South and Central America. Substrate: rock, stones, pebbles – unspecified. Life habit: lichenized (mutualistic with algal photobionts). Thallus: crustose (crustaceous) – episubstratal – unspecified; thallus: continuous, diffuse, effuse | cracked, fissured, fractured, rimose; [th] upper surface: green(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | brown(ish) green (olivaceous, olive green); [th marginal and upper surface] specific structures: absent. Ascomata: absent | present; ascoma: perithecial, perithecioid – hymenial; ascoma [mm]: (min) 0.14 (low) 0.18 (high) 0.26 (max) 0.3; ascoma: subsessile, subimmersed, adnate, semi-immersed, emergent | sessile, superficial; [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: black(ish); [ascm, if apoth] margin excipular photobionts: absent; [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: hyaline, colourless; [ascm] paraphyses/-oids: absent. Asci: fissitunicate – verrucarialean; [asc] tholus: thickened; [asc] tholus amyloidity (iodine reaction): absent. Ascospores: (median) 8.0; [asp] shape: subglobose, subspherical | broadly ellipsoidal | ellipsoidal | oblong, oblong-obtuse; [asp] length [µm]: (min) 7.0 (low) 8.0(median) 9.1 (high) 10.5 (max) 12.0; [asp] width [µm]: (min) 3.5 (low) 3.5(median) 4.1 (high) 4.5 (max) 7.0; [asp] septa: absent – spore lumen unilocular, monolocular; [asp] pigmentation: hyaline, colourless; [asp] perispore, epispore: not apparent. Secondary metabolites: absent. Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid. Secondary photobionts (eg in cephalodia): absent.