Global occurrence: Eurasia – Europe | Arctic. Substrate: soil, clay, humus, turf, detritus, dead leaves. Life habit: lichenized (mutualistic with algal photobionts). Thallus: crustose (crustaceous) – episubstratal – unspecified; continuous, diffuse, effuse; [th] upper surface: grey(ish) | black(ish) grey; [th marginal and upper surface] specific structures: absent. Ascomata: absent | present; ascoma: perithecial, perithecioid – hymenial; ascoma [mm]: (low) 0.3 (high) 0.5; ascoma: immersed, innate; [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon); [ascm, if apoth] margin excipular photobionts: absent; [ascm] paraphyses/-oids: absent. Asci: fissitunicate – verrucarialean; [asc] tholus: thickened; [asc] tholus amyloidity (iodine reaction): absent. Ascospores: (min) 1.0(median) 2.0; [asp] shape: ellipsoid-cylindrical; [asp] length [µm]: (low) 70.0 (high) 135.0; [asp] width [µm]: (low) 30.0 (high) 60.0; [asp] septa: present, muriformly septate – muriform, submuriform; [asp] pigmentation: dark brown; [asp] perispore, epispore: not apparent. Secondary metabolites: absent. Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid. Secondary photobionts (eg in cephalodia): absent.