Life habit: lichenized (mutualistic with algal photobionts) thallus: foliose (foliaceous), leaf-like thallus: continuous, diffuse, effuse [th] upper surface: grey(ish) | yellow(ish) (if dull: buff) | yellow(ish) grey | grey(ish) blue | grey(ish) green | blue(ish) green (turquoise) | yellow(ish) green | grey(ish) yellow | green(ish) yellow | green(ish) brown (olive brown) [th upper surface]: epruinose [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: present [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 10.0 (high) 20.0 (max) 30.0 [th] morphol substructures (eg areoles, squamules): contiguous, coherent (throughout the thallus) [th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane | rugose, plicate, folded, pustulate, faveolate, wrinkled [th] lower surface: grey(ish) [th lower surface] specific structures: present [th lower surface] rhizines, rhizoid structures: absent | present [th lower surface] rhizines, rhizinoid structures: unbranched, simple ascomata: absent | present ascoma: apothecial, apothecioid – hymenial ascoma [mm]: (low) 1.0 (high) 2.0 ascoma: sessile, superficial [ascm, if apoth] disc, mazaedium: concave [ascm, if apoth] disc, mazaedium: red(dish) brown (if pale: orange brown) [ascm, if apoth] disc, mazaedium: epruinose [ascm] paraphyses/-oids: present asci: lecanoralean [asc] tholus: thickened [asc] tholus amyloidity (iodine reaction): present [asc] tholus amyloidity pattern: with amyloid cap (= Icmadophila-, Lecidea-, Pertusaria-types etc) ascospores: (median) 8.0 [asp] shape: acicular (needle-shaped) [asp] length [µm]: (low) 60.0 (high) 65.0 [asp] width [µm]: (low) 4.0 (high) 5.0 [asp] septa: present [asp] septa: transversely septate [asp] transversal septa: (low) 3.0 (high) 7.0 [asp] pigmentation: hyaline, colourless secondary metabolites: present secondary metabolites: constictic acid | cryptostictic acid | norstictic acid | scrobiculic acid | stictic acid | usnic acid primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: cyanobacterial

substrate: bryophytes – mosses, liverworts | bark, cork, plant surface – trunks, branches, twigs | rock – siliceous, siliciferous, acidic | rock, stones, pebbles – unspecified.