Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.
Apothecia: dispersed, immersed to erumpent, 100-250 µm in diam., ±distinctly marginate, disc: dark brown to black, plane, +round exciple: dark to blackish brown, laterally 10-20 µm wide, basally slightly paler, 20-35 µm wide epihymenium: dark to blackish brown, 5-10 µm thick hymenium: hyaline to pale brown, 35-45 µm tall paraphyses: 1-2 µm thick asci: subcylindrical, 30-50 x 7.5-8.5 µm; wall: apically mainly 1.5-2 µm thick, KI+ pale blue ascospores: hyaline, simple, ellipsoid, 8.5-10.5 x 2.5-3.5 µm. Hosts: on squamules of Cladonia species World distribution: Europe, Macaronesia, North and South America, and Australasia Sonoran distribution: collected twice in Arizona.