Some of the most spectacular and famous spring wildflower displays in California occur in the state's deserts. In fact, California's deserts support a surprisingly rich diversity of plants and animals year-round, making them a rewarding destination for outdoor enthusiasts as well as professional naturalists. First published forty years ago, this popular field guide has never been superseded as a guide to the wildflowers in these botanically rich areas. Easy-to-use, portable, and comprehensive, it has now been thoroughly updated and revised throughout, making it the perfect guide to take along on excursions into the Mojave and Colorado Deserts. It includes 220 new color photographs and 123 detailed drawings. It now identifies more than 240 wildflowers in informative, engaging species accounts. It covers such popular destinations as Death Valley, Palm Springs, and Joshua Tree National Park.