Stonewall Rim Lichen

This lichen is very common on rock throughout the west coast, across the continent to New England. It is pale green to whitish, areolate at center with placodioid (lobate) margins on the colony. The apothecial disks at center may be yellow, tan or pale orange, with lighter rims.

Nearly 150 species of lichen have been identified on the 5,896 acre UCSB Sedgwick Reserve in the Santa Ynez Valley. With funding from John and Heidi Rabel, CCBER has published Lichens of Sedgwick Reserve and Santa Barbara County. This guide helps to identify 56 of the species with descriptions by lichenologist Dr. Shirley Tucker and stunning, full color photographs by Chris Broughton, Professor of Photography at Brook’s Institute, providing a fascinating view of the beauty and complex symbiotic nature of lichens.