Life habit: lichenized (mutualistic with algal photobionts) thallus: fruticose (fruticous), shrub-like, beard-like [th] upper surface: grey(ish) | green(ish) white [th marginal and upper surface] specific structures: present [th margin] cilia, cilioid structures: absent [th upper surface] isidia, isidioid structures: absent [th upper surface] soredia, soralia, soralioid structures: absent [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (min) 0.3 ascomata: absent | present ascoma: apothecial, apothecioid – hymenial [ascm, if apoth] disc, mazaedium: subconvex, slightly convex | convex [ascm, if apoth] disc, mazaedium: brown(ish) black [ascm] paraphyses/-oids: present asci: lecanoralean [asc] tholus: thickened [asc] tholus amyloidity (iodine reaction): present [asc] tholus amyloidity pattern: with amyloid tube, ring (= Collema-, Micarea-, Porpidia-, Psora-types etc) ascospores: (median) 8.0 [asp] septa: present [asp] septa: transversely septate [asp] pigmentation: hyaline, colourless [asp] perispore, epispore: not apparent secondary metabolites: present secondary metabolites: atranorin | norstictic acid | stictic acid primary photobiont: present secondary photobionts (eg in cephalodia): absent | present primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

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