Global occurrence: Oceania – Australasia | Eurasia – Europe | Americas – South and Central America.  Substrate: soil, clay, humus, turf, detritus, dead leaves | bryophytes – mosses, liverworts.  Life habit: lichenized (mutualistic with algal photobionts).  Thallus: squamulose (squamulous); [th] upper surface: grey(ish) | green(ish) | green(ish) grey | brown(ish) yellow (ochraceous, ochre) | yellow(ish) brown; [th marginal and upper surface] specific structures: present; [th margin] cilia, cilioid structures: absent; [th upper surface] isidia, isidioid structures: absent; [th upper surface] soredia, soralia, soralioid structures: absent; [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 0.2 (high) 0.5.  Ascomata: absent | present; ascoma: apothecial, apothecioid – hymenial; ascoma [mm]: (low) 1.0 (high) 3.0 (max) 5.0; [ascm, if apoth] disc, mazaedium: concave | plane, flat, flattened, expanded; [ascm, if apoth] disc, mazaedium: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | red(dish) brown (if pale: orange brown); [ascm, if apoth] disc, mazaedium: epruinose; [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] shape: ellipsoidal; [asp] length [µm]: (low) 19.0 (high) 28.0 (max) 34.0; [asp] width [µm]: (low) 8.0 (high) 10.0 (max) 12.0; [asp] septa: absent – spore lumen unilocular, monolocular; [asp] pigmentation: hyaline, colourless; [asp] perispore, epispore: ornamented, rough, warted, striate, cracked.  Conidiomata: absent | present.  Conidia: cylindrical; [co] length [µm]: (low) 5.0 (high) 6.0.  Secondary metabolites: absent.  Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid.  Secondary photobionts (eg in cephalodia): present.