Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.
Hawksworthiana: U. Braun, Int. J. Mycol. Lich. 3: 276 (1988). Notes: Because Hawksworthiana so far is a monotypic genus, a generic description would simply recapitulate the specific description given below.