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Heterodermia appalachensis (Kruok.) W.L. Culb.
Family: Physciaceae
[Anaptychia appalachensis Kurok.]
Heterodermia appalachensis image
Felix Schumm  
lobes: linear, elongate, ± narrow, 0.5-1 (-2) mm wide, subimbricate centrally, ciliate; cilia: prominent, marginal, pale at the base and blackened towards the branched apices upper surface: gray to dark gray without or with a weak pruina, sometimes with laminal cilia; sorediate soredia: in soralia on the underside near the tips, bending the tips upwards and thus appearing labriform (designated capitate by Kurokawa [1962]) upper cortex: prosoplectenchymatous medulla: white above and salmon below lower cortex: lacking lower surface: white but mostly overlaid by a yellow to salmon-colored pigment (K-), arachnoid, rhizinate; rhizines: marginal, simple Apothecia and Pycnidia: not seen Spot tests: cortex K+ yellow, C-, KC-, P+ yellow; medulla K+ yellow, C-, KC-, P- Secondary metabolites: cortex with atranorin and chloroatranorin; medulla with atranorin, zeorin and leucotylin. World distribution: North America from the southern Appalachian Mountains Sonoran distribution: relatively rare in SE Arizona and Baja California Sure, more common in the Sierra Madre Occidental region of Sonora and Chihuahua.