Constancea 84, 2006
University and Jepson Herbaria
California Lichen Catalog

References from the California Lichen Catalog

ESSLINGER, T. L. 1977a.
A chemosystematic revision of the brown Parmeliae. Journal of the Hattori Botanical Laboratory 42: 1–211.
TUCKER, S. C., & W. P. JORDAN. 1979 (1978).
A catalog of California lichens. Wasmann Journal of Biology 36: 1–105.
TUCKERMAN, E. 1882.
A synopsis of the North American Lichens. Pt. 1, Boston.
Complete references section