Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.
Thallus: foliose, adnate to loosely adnate, 3-8 cm in diam., irregularly lobate lobes: subirregular, elongate, plane to subconvex, separate, contiguous to somewhat imbricate, 1-2.5 mm wide, not lobulate; apices: subrotund, smooth to crenate, eciliate upper surface: light yellow-green, smooth, shiny to dull, often strongly rugulose, epruinose and emaculate, sparsely to moderately isidiate isidia: initially globose, soon becoming cylindrical and irregularly inflated, mostly unbranched, 0.1-0.2 mm in diam., 0.1-0.4 mm tall; tips: weakly epicorticate, brown; soralia and pustulae absent medulla: white, with continuous algal layer lower surface: pale to medium brown, plane, moderately to densely rhizinate; rhizines: pale brown, simple, 0.2-0.5 mm long Apothecia: not observed Pycnidia: not observed Spot tests: upper cortex K-, C-, KC-, P-; medulla K-, C+ red, KC+ red, P- Secondary metabolites: upper cortex with usnic acid (major); medulla with lecanoric acid (major). Substrate and ecology: on acidic rocks, often in open, arid to woodland habitats World distribution: southwestern North America Sonoran distribution: rarely at lower to intermediate elevations in Chihuahua and Sonora. Note: Xanthoparmelia joranadae is the only Xanthoparmelia in the Sonoran region with lecanoric acid.