Reflecting the conclusions of current taxonomic research and recognizing new species found in the state, these thoroughly updated guides offer the most complete and authoritative reference to the plants of Colorado. Both volumes explain basic terminology; discuss plant geography; and describe special botanical features of the mountain ranges, basins, and plains. Interesting anecdotes and introductions are given for each plant family, and hints on recognizing the largest families are provided as well. Each volume includes a complete glossary, indices to common and specific names, and hundreds of illustrations. Ideal both for the student and scientist, Colorado Flora: Eastern and Western Slopes, Third Edition remain essential to readers interested in Colorado's plant life.