Life habit: lichenized (mutualistic with algal photobionts) thallus: foliose (foliaceous), leaf-like thallus: continuous, diffuse, effuse [th] upper surface: black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | black(ish) brown | green(ish) brown (olive brown) [th upper surface]: epruinose [th marginal and upper surface] specific structures: absent [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 1.0 (high) 2.0 (max) 2.5 [th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane | verrucose, warted | pseudocyphellate, with pseudocyphellae [th] lower surface: black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | brown(ish) black [th lower surface] specific structures: present [th lower surface] rhizines, rhizoid structures: present [th lower surface] rhizines, rhizinoid structures: unbranched, simple ascomata: absent | present ascoma: apothecial, apothecioid – hymenial ascoma [mm]: (min) 5.0 ascoma: sessile, superficial [ascm] paraphyses/-oids: present asci: lecanoralean [asc] tholus: thickened [asc] tholus amyloidity (iodine reaction): present [asc] tholus amyloidity pattern: amyloid with widening axial body towards the apex (= Lecanora-, Parmelia-, Rinodina-types etc) ascospores: (median) 8.0 [asp] shape: ellipsoidal [asp] length [µm]: (low) 7.0 (high) 10.5 [asp] width [µm]: (low) 4.5 (high) 6.0 [asp] septa: absent – spore lumen unilocular, monolocular [asp] pigmentation: hyaline, colourless [asp] perispore, epispore: not apparent conidiomata: absent | present conidia: bifusiform [co] length [µm]: (low) 5.0 (high) 6.0 secondary metabolites: present secondary metabolites: atranorin | chloroatranorin | constictic acid | cryptostictic acid | menegazziaic acid | norstictic acid | stictic acid primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

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