Global occurrence: Eurasia – Europe | Arctic. Substrate: rock – calcareous, calciferous, basic | rock, stones, pebbles – unspecified. Life habit: lichenized (mutualistic with algal photobionts). Thallus: crustose (crustaceous) – endosubstratal, inconspicuous, immersed | crustose (crustaceous) – episubstratal – unspecified; cracked, fissured, fractured, rimose | compartimentized – areolate, squamulate; [th] upper surface: grey(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | white(ish) | white(ish) grey; [th marginal and upper surface] specific structures: absent; [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (min) 0.5; [th] morphol substructures (eg areoles, lobes, branches) upper surface: verrucose, warted. Ascomata: absent | present; ascoma: apothecial, apothecioid – hymenial; ascoma [mm]: (min) 0.45 (low) 0.8 (high) 1.0 (max) 1.5; ascoma: sessile, superficial; [ascm, if apoth] disc, mazaedium: subconvex, slightly convex | convex | distinctly convex | strongly convex, hemispherical, (sub-)globose; [ascm, if apoth] disc, mazaedium: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | red(dish) yellow (orange, orange yellow) | green(ish) brown (olive brown) | red(dish) brown (if pale: orange brown); [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | green(ish) brown (olive brown) | red(dish) brown (if pale: orange brown); [ascm, if apoth] margin excipular photobionts: absent; [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | hyaline, colourless | red(dish) brown (if pale: orange brown); [ascm] paraphyses/-oids: present; [ascm] paraphyses/-oid cells width [µm]: (low) 2.5(median) 3.1 (high) 4.0; [ascm] paraphyses/-oid apical cells width [µm]: (low) 2.5(median) 4.0 (high) 5.0; [ascm] epihymenium, epithecium: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | red(dish) yellow (orange, orange yellow) | yellow(ish) red (orange red). 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: broadly ellipsoidal | ellipsoidal | ovoid, ovate; [asp] length [µm]: (min) 9.5 (low) 11.0(median) 12.0 (high) 13.0 (max) 15.0; [asp] width [µm]: (min) 4.5 (low) 5.0(median) 6.5 (high) 8.0; [asp] septa: absent – spore lumen unilocular, monolocular; [asp] pigmentation: hyaline, colourless; [asp] perispore, epispore: not apparent. Conidiomata: absent | present. Conidia: cylindrical | bacilliform, bacillary. Secondary metabolites: present, unknown/unidentified anthraquinone(s). Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid. Secondary photobionts (eg in cephalodia): absent.