Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.

Thallus: placodioid, monophyllus, with distinct marginal lobes, up to 2.1 cm in diam. upper surface: yellow or orange, covered with whitish pruina, schizidia absent upper cortex: paraplectenchymatous, 17-50 µm thick including a up to 30 µm thick epinecral layer medulla: white, 75-175 µm thick; algal layer: continuous, 50-80 µm thick lower cortex: absent lower surface: gelatinized, compressed hyhae Apothecia: common, sessile, up to 1.1 mm in diam. disc: flat margin: smooth, brighter than disc asci: clavate, 8-spored ascospores: hyaline, simple, ellipsoid, 10-15 x 4-5 µm Pycnidia: not found Secondary metabolites: anthraquinone pigments. Substrate and ecology: soil World distribution: wide spread in the Northern Hemisphere Sonoran distribution: very rare so far only known from Baja California.