Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2002. Lichen Flora of the Greater Sonoran Desert Region. Vol 1.
Squamules: up to 5 mm diam., dispersed to adjacent, bullate upper surface: medium brown to reddish brown ascospores: narrowly ellipsoid to bacilliform, 1- to 3 (-4) septate, 12-31 x 3-4.5 µm. Host: cyanolichens Substrate and ecology: on soil and rock in Californian coastal scrub and Vizcaino subdivision of Sonoran Desert, up to 800 m World and Sonoran distribution: rather common in coastal California (extending north of the Sonoran area) and Baja California.