Life habit: lichenized (mutualistic with algal photobionts) thallus: crustose (crustaceous) – episubstratal – unspecified thallus: continuous, diffuse, effuse | compartimentized – areolate, squamulate [th] upper surface: grey(ish) | yellow(ish) (if dull: buff) [th marginal and upper surface] specific structures: absent | present [th margin] cilia, cilioid structures: absent [th upper surface] isidia, isidioid structures: absent [th upper surface] soredia, soralia, soralioid structures: absent ascomata: absent | present ascoma: apothecial, apothecioid – hymenial ascoma [mm]: (min) 0.3 (low) 0.5 (high) 0.8 (max) 1.5 ascoma: immersed, innate [ascm, if apoth] disc, mazaedium: plane, flat, flattened, expanded [ascm, if apoth] disc, mazaedium: black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: brown(ish) (if pale: fawn, tan; if mid: cinnamon) [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | hyaline, colourless [ascm] paraphyses/-oids: present asci: lecanoralean [asc] tholus: thickened [asc] tholus amyloidity (iodine reaction): present [asc] tholus amyloidity pattern: with amyloid tube (= Collema-, Micarea-, Porpidia-, Psora-types etc) ascospores: (median) 8.0 [asp] shape: ellipsoidal [asp] length [µm]: (min) 21.0 (low) 23.0 (high) 30.0 (max) 40.0 [asp] width [µm]: (min) 9.5 (low) 12.0 (high) 18.0 (max) 22.0 [asp] septa: absent – spore lumen unilocular, monolocular [asp] pigmentation: hyaline, colourless [asp] perispore, epispore: thick, distincly halonate conidiomata: absent | present conidia: bacilliform, bacillar secondary metabolites: absent primary photobiont: present secondary photobionts (eg in cephalodia): present primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

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