Global occurrence: Eurasia – Europe | Arctic. Substrate: lichens, lichenized fungi | rock – siliceous, siliciferous, acidic | rock, stones, pebbles – unspecified. Life habit: lichenized (mutualistic with algal photobionts) | lichenicolous (in/on lichens). Thallus: crustose (crustaceous) – episubstratal – unspecified; granular, granulose, granulate | cracked, fissured, fractured, rimose; [th] upper surface: grey(ish) | green(ish) grey | red(dish) brown (if pale: orange brown); [th marginal and upper surface] specific structures: absent; [th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane | granulose, granular. Ascomata: absent | present; ascoma: perithecial, perithecioid – hymenial; ascoma [mm]: (low) 0.15 (high) 0.25; ascoma: subsessile, subimmersed, adnate, semi-immersed, emergent; [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: black(ish); [ascm, if apoth] margin excipular photobionts: absent; [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: hyaline, colourless; [ascm] paraphyses/-oids: absent. Asci: fissitunicate – verrucarialean; [asc] tholus: thickened; [asc] tholus amyloidity (iodine reaction): absent. Ascospores: (median) 8.0; [asp] shape: ellipsoidal; [asp] length [µm]: (low) 12.0 (high) 20.0; [asp] width [µm]: (low) 6.0 (high) 10.0; [asp] septa: present, transversely septate | muriformly septate – muriform, submuriform; [asp] transversal septa: (low) 2.0 (high) 3.0; [asp] pigmentation: hyaline, colourless; [asp] perispore, epispore: not apparent. Secondary metabolites: absent. Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid. Secondary photobionts (eg in cephalodia): absent.