The Natural History of California covers general interest information on the state, uses of California native plants and poisonous plants, climate, geology, ecology, biogeography, oceanography, and important references. It recommends natural history equipment and what to wear in the field. Best of all, it provides details on the natural history of Northern-Central California and Southern California by including several hundred photos of sites and organisms. It contains a classification of listed genera and species and a detailed index. It is designed for tourists, business people, students, and travelers with limited time.