Global occurrence: Eurasia – Asia Extratropical | Eurasia – Europe | Americas – North America (incl Mexico) | Arctic.  Substrate: soil, clay, humus, turf, detritus, dead leaves.  Life habit: lichenized (mutualistic with algal photobionts).  Thallus: fruticose (fruticous), shrub-like, beard-like; [th] upper surface: grey(ish) | yellow(ish) white (ivory, off-white, cream-coloured); [th marginal and upper surface] specific structures: absent; [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 0.8 (high) 1.6 (max) 2.0; [th] morphol substructures (eg areoles, lobes, branches) upper surface: verruculose, minutely warted; [th] morphol substructures (eg lobes, branches): anisotomic-dichotomous.  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] septa: absent – spore lumen unilocular, monolocular; [asp] pigmentation: hyaline, colourless; [asp] perispore, epispore: not apparent.  Conidiomata: absent | present.  Secondary metabolites: present, atranorin | fumarprotocetraric acid | unknown/unidentified compound(s) | unknown/unidentified fatty acid(s).  Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid.  Secondary photobionts (eg in cephalodia): absent.