1997 IUCN red list of threatened plants (1997)

Alpine flora of the Canadian Rocky Mountains - Brown, Stewardson, 1867 -1921 (G. P. Putnam's sons, 1907)

Alpine flora of the Canadian Rocky Mountains - Brown, Stewardson, 1867 -1921 (G. P. Putnam's sons, 1907)

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Aquilegia - Colorado Native Plant Society. (Colorado Native Plant Society, 2019)

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Bulletin of the Torrey Botanical Club - Torrey Botanical Club. (Torrey Botanical Club, 1901)

Bulletin of the Torrey Botanical Club - Torrey Botanical Club. (Torrey Botanical Club)

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Castilleja : the newsletter of the Wyoming Native Plant Society - Wyoming Native Plant Society. (Wyoming Native Plant Society, 1994)

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Checklist of vascular plants of the Southern Rocky Mountain Region - Snow, Neil Wilton (2009)

Contributions from the New York Botanical Garden - New York Botanical Garden (The Garden, 1909)

Contributions from the New York Botanical Garden - New York Botanical Garden (The Garden, 1912)

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Ecological types of the upper Gunnison Basin : review draft - Johnston, Barry C. (U.S. Department of Agriculture, Forest Service, Grand Mesa-Uncompahgre-Gunnison National Forests, 1997)

Ecological types of the upper Gunnison Basin : review draft - Johnston, Barry C. (U.S. Department of Agriculture, Forest Service, Grand Mesa-Uncompahgre-Gunnison National Forests, 1997)

Ecological types of the upper Gunnison Basin : review draft - Johnston, Barry C. (U.S. Department of Agriculture, Forest Service, Grand Mesa-Uncompahgre-Gunnison National Forests, 1997)

Ecological types of the upper Gunnison Basin : review draft - Johnston, Barry C. (U.S. Department of Agriculture, Forest Service, Grand Mesa-Uncompahgre-Gunnison National Forests, 1997)

Ecological types of the upper Gunnison Basin : review draft - Johnston, Barry C. (U.S. Department of Agriculture, Forest Service, Grand Mesa-Uncompahgre-Gunnison National Forests, 1997)

Ecological types of the upper Gunnison Basin : review draft - Johnston, Barry C. (U.S. Department of Agriculture, Forest Service, Grand Mesa-Uncompahgre-Gunnison National Forests, 1997)

Ecological types of the upper Gunnison Basin : review draft - Johnston, Barry C. (U.S. Department of Agriculture, Forest Service, Grand Mesa-Uncompahgre-Gunnison National Forests, 1997)

Ecological types of the upper Gunnison Basin : review draft - Johnston, Barry C. (U.S. Department of Agriculture, Forest Service, Grand Mesa-Uncompahgre-Gunnison National Forests, 1997)

The flora of Boulder, Colorado, and vicinity - Daniels, Francis Potter, 1869 -1947 (The University of Missouri, 1911)

The flora of Boulder, Colorado, and vicinity - Daniels, Francis Potter, 1869 -1947 (The University of Missouri, 1911)

Flora of Colorado - Rydberg, Per Axel, 1860 -1931 (Experiment Station, 1906)

Flora of Colorado - Rydberg, Per Axel, 1860 -1931 (Experiment Station, 1906)

Flora of Colorado - Rydberg, Per Axel, 1860 -1931 (Experiment Station, 1906)

Flora of Colorado - Rydberg, Per Axel, 1860 -1931 (Experiment Station, 1906)

Flora of Colorado - Rydberg, Per Axel, 1860 -1931 (Experiment Station, 1906)

Flora of Colorado - Rydberg, Per Axel, 1860 -1931 (Experiment Station, 1906)

Flora of New Mexico - Standley, Paul Carpenter, 1884 -1963 (G.P.O, 1915)

Flora of New Mexico. By E.O. Wooton and Paul C. Standley - Standley, Paul Carpenter, 1884 -1963 (Govt. Print. Off, 1915)

Flora of New Mexico - Standley, Paul Carpenter, 1884 -1963 (G.P.O, 1915)

Flora of the four corners region : vascular plants of the San Juan River drainage, Arizona, Colorado, New Mexico, and Utah / Kenneth D. Heil...[et al.] - Heil, Kenneth D. (Missouri Botanical Garden, 2013)

Flora of the Fraser Experimental Forest, Colorado - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1993)

Flora of the Rocky Mountains and adjacent plains, Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and neighboring parts of Nebraska, South Dakota, North Dakota, and British Columbia - Rydberg, Per Axel, 1860 -1931 (The author, 1922)

Flora of the Rocky Mountains and adjacent plains : Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and neighboring parts of Nebraska, South Dakota, North Dakota, and British Columbia - Rydberg, Per Axel, 1860 -1931 (Rydberg, 1917)

Flora of the Rocky Mountains and adjacent plains : Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and neighboring parts of Nebraska, South Dakota, North Dakota, and British Columbia - Rydberg, Per Axel, 1860 -1931 (Rydberg, 1917)

Flora of the Rocky Mountains and adjacent plains, Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and neighboring parts of Nebraska, South Dakota, and British Columbia - Rydberg, Per Axel, 1860 -1931 (The author, 1917)

Flora of the Rocky Mountains and adjacent plains, Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and neighboring parts of Nebraska, South Dakota, and British Columbia - Rydberg, Per Axel, 1860 -1931 (The author, 1917)

Flora of the Rocky Mountains and adjacent plains, Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and neighboring parts of Nebraska, South Dakota, and British Columbia - Rydberg, Per Axel, 1860 -1931 (The author, 1917)

Flora of the Rocky Mountains and adjacent plains, Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and neighboring parts of Nebraska, South Dakota, and British Columbia - Rydberg, Per Axel, 1860 -1931 (The author, 1917)

Die Gartenwelt - Hesdörffer, Max, 1863 -1920 (G. Schmidt, 1920)

The Glacier Lakes Ecosystem Experiments Site - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1994)

The Great Basin naturalist - Brigham Young University. (M.L. Bean Life Science Museum, Brigham Young University, 1981)

The Great Basin naturalist - Brigham Young University. (M.L. Bean Life Science Museum, Brigham Young University, 1983)

The Great Basin naturalist - Brigham Young University. (M.L. Bean Life Science Museum, Brigham Young University, 1985)

The Great Basin naturalist - Brigham Young University. (M.L. Bean Life Science Museum, Brigham Young University, 1985)

The Great Basin naturalist - Brigham Young University. (M.L. Bean Life Science Museum, Brigham Young University, 1987)

Great Basin naturalist memoirs - Brigham Young University. (Brigham Young University, 1987)

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The Green thumb - Denver Botanic Gardens. (Colorado Forestry and Horticulture Association, 1985)

Journal of the Botanical Research Institute of Texas - Botanical Research Institute of Texas. (Botanical Research Institute of Texas, 2012)

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Just's Botanischer Jahresbericht - Just, Johann Leopold, 1841 -1891 (Gebruder Borntraeger, 1899)

Key to the Rocky Mountain flora. Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and parts of Nebraska, South Dakota, North Dakota, and British Columbia - Rydberg, Per Axel, 1860 -1931 (1919)

Life zones and crop zones of New Mexico - Bailey, Vernon, 1864 -1942 (G.P.O, 1913)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1955)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1985)

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Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1988)

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Muhlenbergia - Heller, Amos Arthur, 1867 -1944 (1909)

New manual of botany of the central Rocky Mountains, vascular plants - Coulter, John Merle, 1851 -1928 (American Book Co, 1909)

New manual of botany of the central Rocky mountains (vascular plants) - Coulter, John Merle, 1851 -1928 (American book company, 1909)

New manual of botany of the central Rocky mountains (vascular plants) - Coulter, John Merle, 1851 -1928 (American book company, 1909)

New manual of botany of the central Rocky Mountains, vascular plants - Coulter, John Merle, 1851 -1928 (American Book Co, 1909)

New manual of botany of the central Rocky mountains (vascular plants) - Coulter, John Merle, 1851 -1928 (American Book Company, 1909)

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Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1986)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1989)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1997)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1997)

Phytoneuron (Guy L. Nesom, 2014)

Phytoneuron (Guy L. Nesom, 2014)

Plant associations of region two : potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas - Johnston, Barry C. (USDA Forest Service, Rocky Mountain Region, 1987)

Plant associations of region two : potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas - Johnston, Barry C. (USDA Forest Service, Rocky Mountain Region, 1987)

Plant associations of region two : potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas - Johnston, Barry C. (USDA Forest Service, Rocky Mountain Region, 1987)

Plant associations of region two : potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas - Johnston, Barry C. (USDA Forest Service, Rocky Mountain Region, 1987)

Plant associations of region two : potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas - Johnston, Barry C. (USDA Forest Service, Rocky Mountain Region, 1987)

Plant associations of region two : potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas - Johnston, Barry C. (USDA Forest Service, Rocky Mountain Region, 1987)

Plant associations of region two : potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas - Johnston, Barry C. (USDA Forest Service, Rocky Mountain Region, 1987)

Plant associations of region two : potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas - Johnston, Barry C. (USDA Forest Service, Rocky Mountain Region, 1987)

Plant associations of region two : potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas - Johnston, Barry C. (USDA Forest Service, Rocky Mountain Region, 1987)

Plant associations of region two : potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas - Johnston, Barry C. (USDA Forest Service, Rocky Mountain Region, 1987)

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Trampling effects on mountain vegetation in Washington, Colorado, New Hampshire, and North Carolina - Intermountain Research Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station, 1993)

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Wild flowers of the North American mountains - Henshaw, Julia W. (Julia Wilmotte) 1869 -1937 (R.M. McBride, 1915)

Wild flowers of the North American mountains - Henshaw, Julia W. (Julia Wilmotte) 1869 -1937 (R.M. McBride, 1915)

Wild flowers of the North American mountains - Henshaw, Julia W. (Julia Wilmotte) 1869 -1937 (R.M. McBride, 1915)

Wild flowers of the North American mountains - Henshaw, Julia W. (Julia Wilmotte) 1869 -1937 (R.M. McBride, 1915)

Wild flowers of the North American mountains - Henshaw, Julia W. (Julia Wilmotte) 1869 -1937 (R.M. McBride, 1915)

Wild flowers of the North American mountains - Henshaw, Julia W. (Julia Wilmotte) 1869 -1937 (R.M. McBride, 1915)

Wild flowers of the North American mountains - Henshaw, Julia W. (Julia Wilmotte) 1869 -1937 (R.M. McBride, 1915)