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.