Life habit: lichenized (mutualistic with algal photobionts) thallus: foliose (foliaceous), leaf-like thallus: continuous, diffuse, effuse [th] upper surface: brown(ish) green (olivaceous, olive green) | black(ish) brown | red(dish) brown (if pale: orange brown) [th upper surface]: pruinose [th marginal and upper surface] specific structures: present [th margin] cilia, cilioid structures: absent [th upper surface] isidia, isidioid structures: present [th upper surface] soredia, soralia, soralioid structures: absent [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 1.0 (high) 4.0 (max) 6.0 [th] morphol substructures (eg areoles, squamules): distantly discontiguous [th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane [th] morphol substructures (eg lobes, branches): subdichotomous | irregular [th] lower surface: black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) [th lower surface] specific structures: present [th lower surface] rhizines, rhizoid structures: present [th lower surface] rhizines, rhizinoid structures: unbranched, simple ascomata: absent secondary metabolites: absent primary photobiont: present secondary photobiontsa (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

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