Carnivorous pitcher plants, pygmy conifers, and the Tiburon jewel flower, restricted to a small patch of serpentine soil on Tiburon Peninsula in Marin County, are just a few of California's many amazing endemic plants--species that are unique to particular locales. California boasts an abundance of endemic plants precisely because it also boasts the richest geologic diversity of any place in North America, perhaps in the world. In lively prose, Arthur...