To find more books on the ethnobotany of California, click on this link to be redirected to the library's OneSearch: ethnobotany AND california
Ethnobotany books are spread out on different floors of the library due to the interdisciplinary nature of ethnobotany. You will find books in the Botany section (subclass QK on 3rd floor), History of the Americas (class E on 6th floor) and Anthropology (subclass GN on 6th floor)