Trees and Shrubs of Tilden Regional Park
A guide to the woody trees and shrubs of Tilden Nature Area and Tilden Regional Park.
If a species isn't on this guide, document it!
Western Leatherwood
Dirca occidentalis, or Western Leatherwood, is a deciduous shrub with leaves three to seven centimeters in length. Yellow flowers emerge prior to leafing. It grows on moist and shaded slopes. It is rare and endemic to the San Francisco Bay area of California. Its closest relative, Dirca palustris, lives in the Eastern half of North America.
