Global occurrence: Oceania – Australasia | Eurasia – Europe | Arctic. Substrate: soil, clay, humus, turf, detritus, dead leaves. Life habit: lichenized (mutualistic with algal photobionts). Thallus: crustose (crustaceous) – endosubstratal, inconspicuous, immersed | crustose (crustaceous) – episubstratal – unspecified; Th marginal and upper surface specific structures: absent. Ascomata: absent | present. Ascoma: apothecial, apothecioid – hymenial, ascoma [mm]: (min) 0.2. [ascm, if apoth] disc, mazaedium: white(ish) | brown(ish) white; [ascm, if apoth] margin excipular photobionts: absent; [ascm] paraphyses/-oids: present; Asci: unitunicate; [asc] tholus: not thickened | thickened. [asc] tholus amyloidity (iodine reaction): absent. Ascospores: (median) 8.0; [asp] length [µm]: (low) 8.0 (high) 15.0; [asp] width [µm]: (low) 3.0 (high) 5.0; [asp] septa: present; [asp] septa: transversely septate; [asp] transversal septa: (median) 1.0; [asp] pigmentation: hyaline, colourless; [asp] perispore, epispore: not apparent. Primary photobiont: present. Secondary photobionts (eg in cephalodia): absent. Primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.