The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2004)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2006)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2008)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2011)

Canotia - Arizona State University. Vascular Plant Herbarium. (Vascular Plant Herbarium, School of Life Sciences, Arizona State University, 2012)

Capital natural de México - Sarukhan, Jose (Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO), 2009)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1913)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1916)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1920)

Caroli Linnaei Systema, genera, species plantarum uno volumine : editio critica, adstricta, conferta, sive, Codex botanicus linnaeanus : textum linnaeanum integrum ex omnibus Systematis, Generum, Specierum plantarum editionibus, mantissis, additamentis selectumque ex ceteris ejus botanicis libris digestum, collatum, contractum, cum plena editionum discrepantia exhibens : in usum botanicorum practicum - Linné, Carl von, 1707 -1778 (Sumptum fecit O. Wigand, 1840)

Caroli Linnaei Systema, Genera, Species plantarum uno volumine : editio critica, adstricta, conferta, sive, Codex botanicus linnaeanus : textum linnaeanum intergrum ex omnibus Systematis, Generum, Specierum plantarum editionibus, mantissis, additamentis selectumque ex ceteris ejus botanicis libris digestum, collatum, contractum, cum plena editionum discrepantia exhibens - Linné, Carl von, 1707 -1778 (sumptum fecit O. Wigard, 1835)

Cascade-Siskiyou National Monument : draft resource management plan/environmental impact statement - United States. Bureau of Land Management. Medford District. (U.S. Department of the Interior, Bureau of Land Management, Medford District Office, 2002)

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Castilleja : the newsletter of the Wyoming Native Plant Society - Wyoming Native Plant Society. (Wyoming Native Plant Society, 1984)

Castilleja : the newsletter of the Wyoming Native Plant Society - Wyoming Native Plant Society. (Wyoming Native Plant Society, 1999)

Castilleja : the newsletter of the Wyoming Native Plant Society - Wyoming Native Plant Society. (Wyoming Native Plant Society, 2001)

Castilleja : the newsletter of the Wyoming Native Plant Society - Wyoming Native Plant Society. (Wyoming Native Plant Society, 2007)

Castilleja : the newsletter of the Wyoming Native Plant Society - Wyoming Native Plant Society. (Wyoming Native Plant Society, 2016)

Castilleja : the newsletter of the Wyoming Native Plant Society - Wyoming Native Plant Society. (Wyoming Native Plant Society, 2020)

Castilleja : the newsletter of the Wyoming Native Plant Society - Wyoming Native Plant Society. (Wyoming Native Plant Society, 2022)

Catálogo de la familia Poaceae en la República Argentina - Zuloaga, Fernando O. (Missouri Botanical Garden, 1994)

Catálogo de las plantas vasculares del Cono Sur : (Argentina, Sur de Brasil, Chile, Paraguay y Uruguay) - Missouri Botanical Garden. (Missouri Botanical Garden Press, 2008)

Catalog of Ohio vascular plants : arranged according to the phyletic classification : with notes on the geographical distribution in the state, based mainly on specimens in the State Herbarium, Botanical Laboratory, the Ohio State University - Schaffner, John H. (John Henry), 1866 -1939 (Ohio State University, 1914)

Catalog of Ohio vascular plants, arranged according to the phyletic classification; with notes on the geographical distribution in the state, based mainly on specimens in the State Herbarium, Botanical Laboratory, the Ohio State University - Schaffner, John H. (John Henry), 1866 -1939 (The Ohio State University, 1914)

Catalogue de la flore valaisanne - Jaccard, Henri, 1844 -1922 (H. Georg, 1895)

Catalogue des plantes vasculaires qui croissent naturellement aux environs de Genève - Reuter, G. F. (Georges François), 1805 -1872 (J. Kessmann, 1861)

A catalogue of all phaenogamous plants at present known to grow without cultivation in the state of Connecticut - Bishop, James N. (James Nathaniel), 1851 -1906 (Press of the Case, Lockwood & Trainard Co, 1885)

A catalogue of plants growing without cultivation in the County of Nantucket, Mass - Owen, Maria L. (Maria Louisa), 1825 -1913 (Gazette Printing Co, 1888)

Catalogue of scientific papers, 1800-1863 [to 1884-1900] - Royal Society (Great Britain) (Eyre & Spottiswoode, 1867)

Catalogue of the flowering plants and ferns of Connecticut growing without cultivation - Graves, Charles Burr, 1860 -1936 (Printed for the State Geological and Natural History SUrvey, 1910)

Catalogue of the flowering plants and ferns of Connecticut growing without cultivation - Harger, Edgar Burton, 1867 - (Printed for the State Geological and Natural History Survey, 1910)

Catalogue of the flowering plants and ferns of Connecticut growing without cultivation - Graves, Charles Burr, 1860 -1936 (Printed for the State Geological and Natural History Survey, 1910)

Catalogue of the phanerogams and ferns of Licking County, Ohio - Jones, Herbert Lyon, 1866 -1898 (Press of Granville Times, 1892)

Catalogue raisonné des plantes phanérogames qui croissent spontanément dans le département de la Charente - Savatier, Alexandre, 1824 -1886 (J.-B. Baillière, 1860)

Catalogue raisonné des plantes vasculaires du département de la Somme - Blondin de Brutelette, Henri-Léopold, 1806 -1878 (Impr. P. Briez, 1865)

Catalogue raisonné des plantes qui croissent spontanément dans le département de la Dordogne. distribuées d'après le synopsis florae Germanicae et Helveticae du docteur G.D.J. Koch Premire partie Phanrogames - Des Moulins, Charles, 1798 -1875 (Th. Lafargue, 1840)

A century of botanical exploration in Montana, 1805-1905 : collectors, herbaria, and bibliography ; Supplement to the flora of Montana : additions, and corrections ; Common names of Montana plants - Henshall, Hester F. (Montana Agricultural College, 1905)

Changes in ponderosa pine forests of the Mt. Logan Wilderness - United States. Bureau of Land Management. (Northern Arizona University, College of Ecosystem Science and Management, 1998)

Characteristics and hybridization of important intermountain shrubs III Sunflower family - United States. Forest Service. (Intermountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1979)

The Chautauqua flora : a catalogue of the plants of Chautauqua Co., New York, native or naturalized ; extending through the cryptogamous plants, to the end of the Hepaticae - Burgess, Edward Sandford, 1855 -1928 ([E.S. Burgess?], 1877)

Cheatgrass : the invader that won the west - United States. Forest Service. (U.S. Department of the Interior, Bureau of Land Management, Idaho State Office, 1996)

Check list of plants housed in the Forest Service, Southern Region, Herbarium - United States. Forest Service. Southern Region. Herbarium. (U.S. Dept. of Agriculture, Forest Service, Southern Region, 1982)

A checklist of New York State plants - Mitchell, Richard S., 1938 - (University of the State of New York, State Education Dept, 1986)

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

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Chemical control of range weeds : handbook - United States. Range Seeding Equipment Committee. (U.S. Dept. of Agriculture, U.S. Dept. of the Interior, Range Seeding Equipment Committee, 1959)

Christiania amegns phanerogamer og bregner, med angivelse af deres udbredelse samt en indledning om vegetationens afhaengighed af underlaget - Blytt, Axel, 1843 -1898 (Trykt hos Brøgger & Christie, 1870)

Chronological history of plants: man's record of his own existence illustrated through their names, uses, and companionship - Pickering, Charles, 1805 -1878 (Little, Brown & company, 1879)

Chung-kuo chu yao chih wu t?u shuo - Keng, I-li, 1898 - (K'o hsüeh chʻu pan shê, 1959)

Circle west vegetation baseline study : final report - Montana. Energy Division. (Energy Division, Montana Dept. of Natural Resources and Conservation, 1978)

Circle West vegetation monitoring study - Montana. Energy Division. (Energy Division, Montana Dept. of Natural Resources and Conservation, 1982)

Circular - United States. Division of Agrostology. (The Division, 1895)

Classification and management of USDI Bureau of Land Management's riparian and wetland sites in eastern and southern Idaho - United States. Bureau of Land Management. Idaho State Office. (Bitterroot Restoration Incorporated, 2002)

A classification of forest habitat types of the southern Arizona and portions of the Colorado Plateau - DeVelice, Robert L. (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1996)

Classification of Southwestern Montana plant communities : emphasizing those of Dillon Resource Area, Bureau of Land Management - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1995)

Classification of the forest vegetation of Colorado by habitat type and community type - Alexander, Robert R. (1987)

Classification of the plant communities of Beaverhead, Silver Bow, and Madison Counties, Montana - United States. Bureau of Land Management. Billings District Office. (Montana Natural Heritage Program, 1992)

Clavis agrostographiae antiquioris. Uebersicht des Zustandes der Agrostographie bis auf Linné; und Versuch einer Reduction der alten Synonyme der Gräser auf die heutigen Trivialnahmen - Trinius, Carl Bernhard, 1778 -1844 (In der Biedermann'schen Hofbuchhandlung, 1822)

Coefficient of conservatism rankings for the flora of Montana Part III - Montana Natural Heritage Program. (Montana Natural Heritage Program, 2017)

Coefficient of conservatism rankings for the flora of Montana. report to the Montana Department of Environmental Quality, Helena, Montana Part I - Montana. Department of Environmental Quality (Montana Natural Heritage Program, 2015)

Coefficient of conservatism rankings for the flora of Montana Part II - Montana. Department of Environmental Quality (Montana Natural Heritage Program, 2016)

Collection and care of botanical specimens - Savile, D. B. O., (Douglas Barton Osborne), 1909 - (Canada Department of Agriculture, Research Branch, 1962)

Common and scientific names of weeds in Canada = Noms populaires et scientifiques des plantes nuisibles du Canada - Darbyshire, S. J. (Agriculture and Agri-Food Canada = Agriculture et agroalimentaire Canada, 2000)

The common raven - United States. Bureau of Land Management. (Washington, D.C, 1980)

Common weeds of the United States - United States. Agricultural Research Service. (Dover Publications, 1971)

Common winter annual weeds in Alberta - Alberta. Alberta Agriculture, Food,; Rural Development. (Alberta Agriculture, Food and Rural Development, 1997)

Compendium florae Belgicae - Courtois, Richard Joseph, 1806 -1835 (Apud P. J. Collardin, 1828)

Compendium florae Germaniae Sectio I Plantae phanerogamicae seu vasculosae - Bluff, Matthias Joseph, 1805 -1837 (J.L. Schrag, 1836)

Compendium of plant disease and decay fungi in Canada, 1960-1980 - Ginns, J. H. (James Herbert) (Research Branch, Agriculture Canada, 1986)

A compendium of the Cybele britannica; or British plants in their geographical relations - Watson, Hewett Cottrell, 1804 -1881 (Longmans, Green, Reader & Dyer, 1870)

Composition and ecological significance of shrublands/grasslands immediately west of Helena Regional Airport - Montana Natural Heritage Program. ([Montana Natural Heritage Program], 1992)

The condition and trend of aspen communities on BLM administered lands in north-central Nevada with recommendations for management : final report - United States. Bureau of Land Management. (Elko Field Office, Bureau of Land Management, 2002)

The condition and trend of aspen on BLM lands in north-central Nevada with recommendations for management year three : final report - United States. Bureau of Land Management. (Elko Field Office, Bureau of Land Management, 2003)

Congrès international d'entomologie : [proceedings] (Hayez, 1910)

Congrès international d'entomologie : [proceedings] (Hayez, 2008)

Conservation assessment of greater sage-grouse and sagebrush habitats - U.S. Fish; Wildlife Service (Western Association of Fish and Wildlife Agencies, 2004)

Conservation status of Eriogonum X lagopus in southern Carbon County, Montana - Lesica, Peter. (Montana Natural Heritage Program, 1992)

Conservation status of Lomatium attenuatum Evert (Apiaceae) in Montana - United States. Bureau of Land Management. (Montana Natural Heritage Program, 1998)

The conservation status of Picabo milkvetch (Astragalus oniciformis Barneby) - Moseley, Robert K. (Bureau of Land Management, Idaho State Office, 1995)

Conservation strategy for Silene spaldingii (Spalding's catchfly) in Montana - Montana Natural Heritage Program. (Montana Natural Heritage Program, 2005, 2005)