Colorado's elevation range of more than 11,000 feet creates a wide variety of habitats that supports a spectacular diversity of grasses. With 335 known species, Colorado has one of the most diverse and extensive grass floras in the United States. Comprehensive coverage, useful keys, and detailed species descriptions in will make this volume the standard reference for years to come. Robert B. Shaw provides overviews of Colorado's physiography and ecoregions and introduces the grass plant in plain, enjoyable text. He includes a checklist of Colorado grasses, a bibliography, and a glossary of terms that may be unfamiliar to nonspecialists. Line drawings, state distribution maps, and habitat notes for each species enable accurate plant identification, familiarity with regional ecogeography, and increased understanding of plant ecology of the Rocky Mountains. A monumental accomplishment certain to become the standard work on the subject, synthesizes existing literature and incorporates recent scientific findings to offer a complete, current reference.