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Colorado Flora

Western Slope, Fourth Edition

By William A. Weber and Ronald C. Wittmann

Publication Year: 2011

Colorado Flora describes the remarkable flora of the state, distinctive in its altitudinal range, numerous microhabitats, and ancient and rare plants. Together, these volumes are designed to educate local amateurs and professionals in the recognition of vascular plant species so that they can be better stewards of our priceless and irreplaceable biological heritage. These thoroughly revised and updated editions reflect current taxonomic knowledge. The authors describe botanical features of this unparalleled biohistorical region and its mountain ranges, basins, and plains and discuss plant geography, giving detailed notes on habitat, ecology, and range. The keys contain interesting anecdotes and introductions for each plant family. Each volume includes a background of botanical work in the state, a complete glossary, indices to common and scientific names, references and suggested readings, and hundreds of illustrations. The books also contain a new contribution from Donald R. Farrar and Steve J. Popovich on moonworts. The fourth editions of Colorado Flora: Eastern Slope and Colorado Flora: Western Slope are ideal for both student and scientist and essential for readers interested in Colorado’s plant life.

Published by: University Press of Colorado

Title Page, Copyright, Dedication

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p. ix-ix

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pp. xi-xii

The field guides of the Colorado Flora began in 1949 and continue to be works in progress. We learn more and more every season and I, myself, feel very lucky to have lived long enough to have made a good start. Ours is a most interesting flora, unique in its remarkable altitudinal range, special climatic events, and numerous microhabitats. Although having written extensively on vascular plants, lichens, and bryophytes, we have only scratched the surface. Twenty...

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p. xiii-xiii

Our exploration of the Colorado flora has been a cooperative enterprise, involving both field and herbarium work and spanning more than half a century. So many of our students, foreign visitors, and specialists have given invaluable aid that it is impossible to name them all. We have learned from each other, and it is difficult to sort out the mentors and the mentored. We...

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Background of Floristic Work in Colorado

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pp. xv-xxvi

Our knowledge of floras have their beginnings with the collecting of botanical specimens. Fortunately the habit of establishing herbaria, collections of dried plants, began long ago, perhaps in Italy. Reports not backed up by specimens in an herbarium are useless hearsay. These collections must be guarded from abuse, carelessness, and destruction by wars, for the very basis of our knowledge of plants rests on these. The actual specimen upon which a plant ...

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Books to Inspire

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p. xxvii-xxvii

In this book I also try to lure devotees into reading some of the great books of botanical history and adventure. The historical period is being brought to life. Now you can read the journals dealing with the collecting trips of Linnaeus’ students, the struggle in England to move from the Linnean system of classification to a natural one, and how collectors were able to save their specimens in the tropics before the days of modern equipment. You must ...

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A Vade Mecum for the Field Botanist

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pp. xxix-xlix

Colorado Flora: Western Slope has as its subject the vascular plants—ferns, gymnosperms, and flowering plants—native and naturalized on the entire hydrologic Western Slope of Colorado—from the Continental Divide to the Utah, Wyoming, and New Mexico borders. It is a rich and varied territory, lacking only the level plains of the Eastern Slope, but possessing a rich variety of rock types: granites, limestones, sandstones, and volcanics exposed at high and low altitudes...

Key to the Families

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pp. 1-15

Ferns and Fern Allies

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pp. 16-35


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pp. 36-39


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pp. 40-361


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pp. 362-469


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pp. 470-475


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pp. 476-506


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pp. 507-526

Illustrated Plant Structures

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pp. 527-532

E-ISBN-13: 9781607321439
E-ISBN-10: 1607321432
Print-ISBN-13: 9781607321422
Print-ISBN-10: 1607321424

Page Count: 608
Illustrations: 104 line drawings, 1 map, 4 tables
Publication Year: 2011