The Santa Cruz Mountains, an area covering almost 1,400 square miles from San Francisco southward to the Monterey County line, are a part of the Coast Range of Central California. The Mountains and the adjacent lowlands have a rich vascular flora, and about 1,800 species, subspecies, varieties, forms, and hybrids of ferns, conifers, and flowering plants, distributed among 168 families, have been reported from the region. This comprehensive flora, the first of the area, is designed for use by both the serious beginner and the trained botanist. The flora is illustrated by 250 line drawing and...