Global occurrence: Eurasia – Asia Extratropical | Eurasia – Europe | Americas – North America (incl Mexico) | Americas – South and Central America | Eurasia – Asia Tropical | Arctic. Substrate: soil, clay, humus, turf, detritus, dead leaves. Life habit: lichenized (mutualistic with algal photobionts). Thallus: squamulose (squamulous) | fruticose (fruticous), shrub-like, beard-like; [th] upper surface: green(ish) grey; [th marginal and upper surface] specific structures: absent; [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 1.0 (high) 3.0; [th] morphol substructures (eg areoles, lobes, branches) upper surface: rugulose, finely wrinkled. Ascomata: absent | present; ascoma: apothecial, apothecioid – hymenial; ascoma: pedicellate, stipitate, pedunculate, stalked; [ascm, if apoth] disc, mazaedium: brown(ish) (if pale: fawn, tan; if mid: cinnamon); [ascm] paraphyses/-oids: present. Asci: lecanoralean; [asc] tholus: thickened; [asc] tholus amyloidity (iodine reaction): present; [asc] tholus amyloidity pattern: with amyloid tube, ring (= Collema-, Micarea-, Porpidia-, Psora-types etc). Ascospores: (median) 8.0; [asp] length [µm]: (low) 7.0 (high) 11.0; [asp] width [µm]: (low) 3.0 (high) 3.5; [asp] septa: absent – spore lumen unilocular, monolocular; [asp] pigmentation: hyaline, colourless; [asp] perispore, epispore: not apparent. Conidiomata: absent | present. Conidia: falcate; [co] length [µm]: (low) 8.0 (high) 10.0. Secondary metabolites: present, 4-O-demethylbarbatic acid | baeomycesic acid | barbatic acid | squamatic acid | strepsilin | unknown/unidentified compound(s). Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid. Secondary photobionts (eg in cephalodia): absent.