References from the California Lichen Catalog

BOWLER, P. A., W. A. WEBER, & R. E. RIEFNER JR. 1996.

A checklist of the lichens of San Clemente Island, California. Bulletin of the California Lichen Society 3(2): 1–8.

TEHLER, A. 1983.

The genera Dirina and Roccellina (Roccellaceae). Opera Botanica 70: 1–89.