Global occurrence: Eurasia – Europe | Arctic. Substrate: lichens, lichenized fungi. Life habit: lichenicolous (in/on lichens). Thallus: crustose (crustaceous) – endosubstratal, inconspicuous, immersed; [th marginal and upper surface] specific structures: absent. Ascomata: absent | present; ascoma: apothecial, apothecioid – hymenial; ascoma [mm]: (median) 0.4; [ascm, if apoth] disc, mazaedium: subconvex, slightly convex | convex. Asci: lecanoralean; [asc] tholus: thickened;[asc] tholus amyloidity (iodine reaction): present; [asc] tholus amyloidity pattern: entirely amyloid (= Catillaria-, Teloschistes-types etc). Ascospores: (median) 8.0; [asp] length [µm]: (low) 9.5 (high) 12.0; [asp] width [µm]: (low) 7.0 (high) 8.0; [asp] septa: absent | present – spore lumen bilocular, polarilocular, plurilocular; transversely septate; [asp] transversal septa: (median) 1.0; [asp] pigmentation: hyaline, colourless; [asp] perispore, epispore: not apparent. Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid. Secondary photobionts (eg in cephalodia): absent.