A Flora of Southern CaliforniaBook - 1974
This book includes descriptions of more than 4,000 species, of which more than 600 are illustrated with line drawings. The bulk of the work is devoted to the systematic treatment of vascular plants, which are grouped alphabetically by family, genus, and species. There are keys for the identification of all taxa.
Publisher: Berkeley, University of California Press 
Characteristics: 1086 p. illus. 25 cm.