A few sources of information about the Ohlone people’s traditional uses of native California plants (several of which grow on our church grounds) are:

“Wild Gardens” by Beverly R. Ortiz, Bay Nature, January 2006

California Native Plant Society video, “California Ethnobotany: Historical Uses of Native Plants”

Here’s a professor of pharmacology studying Southern California medicinal plants, with guidance from a Chumash elder: “USC Pharmacist Uncovers Healing Properties of Native Plants” (includes the image below)