Life habit: lichenized (mutualistic with algal photobionts) thallus: crustose (crustaceous) – episubstratal – unspecified thallus: continuous, diffuse, effuse | cracked, fissured, fractured, rimose [th] upper surface: grey(ish) | white(ish) [th upper surface]: epruinose [th marginal and upper surface] specific structures: absent [th] morphol substructures (eg areoles, lobes, branches) upper surface: verrucose, warted | cracked, fissured, fractured, rimulose, subrimose | uneven, undulate ascomata: absent | present ascoma: perithecial, perithecioid – hymenial ascoma [mm]: (low) 0.4 (high) 0.8 ascoma: subsessile, subimmersed, adnate, semi-immersed, emergent [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: brown(ish) (if pale: fawn, tan; if mid: cinnamon) [ascm, if apoth] margin excipular photobionts: absent [ascm] paraphyses/-oids: absent | present asci: fissitunicate – bitunicate [asc] tholus: thickened [asc] tholus amyloidity (iodine reaction): absent ascospores: (median) 8.0 [asp] shape: ellipsoidal [asp] length [µm]: (min) 20.5 (low) 28.5 (high) 36.0 (max) 38.5 [asp] width [µm]: (min) 12.0 (low) 15.0 (high) 20.5 (max) 23.8 [asp] septa: present [asp] septa: muriformly septate – muriform, submuriform [asp] transversal septa: (median) 5.0 [asp] pigmentation: dark brown [asp] perispore, epispore: not apparent secondary metabolites: absent primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

substrate: rock – siliceous, siliciferous, acidic | rock – calcareous, calciferous, basic | rock, stones, pebbles – unspecified.