Thallus: adnate, foliose, 4-10 cm in diam., irregularly lobate; lobes: sublinear to subirregular, moderately imbricate, elongate, plane to subconvex, separate, 1.5-5 mm wide; apices: subrotund, with prominent inflated, bulbate cilia; upper surface: pale gray, smooth to rugose, shiny, faintly or distinctly white maculate; isidia: laminal, dense, cylindrical, simple to coralloid; soredia and pustulae absent; medulla: white with continuous algal layer; lower surface: pale brown or darkening, moderately rhizinate, the rhizines, pale to medium brown, simple to branched, concolorous; Apothecia: , rare, laminal, 1-4 mm wide; disc: red brown to dark brown; margin: outer rim usually isidiate, inner rim ecoronate; ascospores: ellipsoid, 7-14 x 5-8 µm; Pycnidia: common, immersed; conidia: bacilliform to weakly bifusiform, 5-6 x 1 µm; Spot tests: upper cortex K+ yellow, C-, KC-, P+ yellow; medulla K+ yellow turning deep red, C-, KC-, P+ orange; Secondary metabolites: upper cortex with atranorin and chloroatranorin; medulla with salazinic acid (major) and consalazinic (minor).; Substrate and ecology: on small trees in open habitats; World distribution: pantropical and extending into subtropics; Sonoran distribution: lowland thorn forests of Sonora. 

Rounded Global Status Rank: G4 - Apparently Secure

Reasons: Pantropical and extending into the subtropics (Nash et al. 2002). Occurs on small trees in open habitats (Nash et al. 2002). Common in Florida (Brodo et al. 2001). In the greater Sonoran Desert region, it occurs in the lowland thorn forests of Sonora (Nash et al. 2002).