Global occurrence: Eurasia – Europe | Arctic. Substrate: rock – calcareous, calciferous, basic. Life habit: lichenized (mutualistic with algal photobionts). Thallus: leprose, leprarioid, powdery, byssoid | crustose (crustaceous) – episubstratal – unspecified; granular, granulose, granulate; [th] upper surface: yellow(ish) (if dull: buff); [th marginal and upper surface] specific structures: absent. Ascomata: absent. Secondary metabolites: present, unknown/unidentified anthraquinone(s). Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid. Secondary photobionts (eg in cephalodia): absent.