Life habit: lichenized (mutualistic with algal photobionts) thallus: crustose (crustaceous) – episubstratal – unspecified thallus: cracked, fissured, fractured, rimose | compartimentized – areolate, squamulate [th] upper surface: grey(ish) | white(ish) | grey(ish) brown [th upper surface]: epruinose [th marginal and upper surface] specific structures: absent [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 0.4 (high) 1.0 [th] morphol substructures (eg areoles, lobes, branches) upper surface: verrucose, warted | bullate | cracked, fissured, fractured, rimulose, subrimose ascomata: absent | present ascoma: perithecial, perithecioid – hymenial ascoma [mm]: (low) 0.44 (high) 0.76 ascoma: subsessile, subimmersed, adnate, semi-immersed, emergent | sessile, superficial [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: black(ish) [ascm, if apoth] margin excipular photobionts: present [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) 51.0 (low) 53.5 (high) 63.5 (max) 70.0 [asp] width [µm]: (min) 26.0 (low) 29.5 (high) 37.0 (max) 40.0 [asp] septa: present [asp] septa: muriformly septate – muriform, submuriform [asp] pigmentation: dark brown [asp] perispore, epispore: not apparent conidiomata: absent | present conidia: bacilliform, bacillar secondary metabolites: absent primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

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