In the spring, California's rolling hills, green valleys, and coastal slopes are colored with wildflowers treasured by both residents and visitors to the state. First published more than forty years ago, this popular guidebook has helped thousands of amateur and intermediate wildflower enthusiasts learn the names of the flowers located in some of the state's loveliest and most accessible areas - from below the yellow pine belt in the Sierra Nevada westward to the coast. Thoroughly revised and updated throughout, it is now easier to use and more accurate - the perfect guide to take along on outdoor excursions in California and surrounding regions. It includes 244 new color photographs and 102 detailed drawings. It now describes more than 400 wildflowers emphasizing the species most likely to be encountered in the state today. The plant descriptions now include more detail, helpful identifying tips, and locales where flowers are likely to be seen.