References from the California Lichen Catalog

BRATT, C., & D. WRIGHT. 1995.

Toninia in California. Bulletin of the California Lichen Society 2(1): 5–7.

MAGNEY, D. 1999.

Preliminary list of rare California lichens. Bulletin of the California Lichen Society 6: 22–27.

TIMDAL, E. 1992.

A monograph of the genus Toninia (Lecideaceae, Ascomycetes). Opera Botanica 110: 1–137.