Catalogue of the vascular plants of Ecuador = Catálogo de las plantas vasculares del Ecuador - González, Amada Pedroni. (Missouri Botanical Garden Press, 1999)

Catalogue of trees, shrubs, climbers, conifers, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (G. Reuthe Ltd, 1958)

Catalogus florae Ludovicianae - Riddell, John Leonard, 1807 -1867 (s.n, 1852)

Catalogus plantarum quae in Horto Botanico Bogoriensi coluntur - Kebun Raya Indonesia. (Lands-Drukkerij, 1866)

Catalogus seminum in Horto Botanico Universitatis Valentinæ anno ... collectorum - Universidad de Valencia. Jardin Botanico. (Hijo F. Vives Mora, 1925)

Catalogus seminum in Horto Botanico Universitatis Valentinæ anno ... collectorum - Universidad de Valencia. Jardin Botanico. (Hijo F. Vives Mora, 1927)

Catalogus seminum in Horto Botanico Universitatis Valentinæ anno ... collectorum - Universidad de Valencia. Jardin Botanico. (Hijo F. Vives Mora, 1928)

Catalogus seminum in Horto Botanico Zeltia - Zeltia (Firm). Horto Botanico. (Zeltia, 1943)

A census of the plants of Victoria, with their regional distribution and the vernacular names, as adopted by the Plant Names Committee of the Field Naturalists' Club of Victoria - Field Naturalists' Club of Victoria. (Field Naturalists Club of Victoria, 1923)

Centralblatt für Physiologie - Physiologische Gesellschaft zu Berlin. (Toeplitz & Deuticke, 1902)

The Century dictionary : an encyclopedic lexicon of the English language: prepared under the superintendence of William Dwight Whitney - Whitney, William Dwight, 1827 -1894 (Century Co, 1889)

A century of progress in the natural sciences, 1853-1953 - California Academy of Sciences (1955)

A century of trees of Panama - Pittier, Henri, 1857 -1950 (1931)

Certain aspects of the metabolism of some quinolizidane alkaloids by Lupinus luteus var. Romulus - Graham, Donald M. (Dept. of Biochemistry, University of Alberta, 1965)

Ceylon journal of science. Section A, Botany - Royal Botanical Gardens, Peradeniya. (Director of Agriculture, 1926)

Characteres essentiales familiarum ac tribuum regni vegetabilis et amphorganici ad leges tetractydis naturae conscripti accedit enumeratio generum magis notorum et organographiae supplementum - Gori͡aninov, Pavel Fedorovich, 1796 -1865 (Typis K. Wienöberianis, 1847)

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)

Check-list of the species of fishes known from the Philippine Archipelago - Jordan, David Starr, 1851 -1931 (Bureau of printing, 1919)

Check-list of the species of fishes known from the Philippine Archipelago - Jordan, David Starr, 1851 -1931 (Bureau of printing, 1918)

Check-list of the species of fishes known from the Philippine Archipelago - Jordan, David Starr, 1851 -1931 (Bureau of printing, 1910)

A check list of the vascular plants of Nicaragua : based largely on collections in Nicaragua made by the author and companions, 1968-1976 - Seymour, Frank Conkling. (H.N. Moldenke and A.L. Moldenke, 1980)

Checklist of CITES Species (1998)

Checklist of CITES Species and Annotated CITES Appendices and Reservations - Inskipp, Tim (CITES Secretariat, UNEP-WCMC, 2005)

Checklist of CITES Species: a reference to the appendices to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (2001)

Checklist of CITES Species: a reference to the appendices to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (1996)

Checklist of CITES Species: a reference to the appendices to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (2003)

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

Checklist of plants of the Ottawa District - Gillett, John M. (John Montague), 1918 -2014 (1958)

A checklist of the vascular flora in the vicinity of the Oldman River Dam - Alberta Environmental Centre. (Alberta Environmental Centre, 1992)

Checklist of the vascular plants of Alabama from the John D. Freeman Herbarium and the University of Alabama Herbarium - Morton, Cynthia M. (Carnegie Museum of Natural History, 2002)

Checklist of the vascular plants of Powdermill Nature Reserve, Westmoreland County, Pennsylvania - Utech, Frederick H. (Carnegie Museum of Natural History, 1999)

Checklist of the vascular plants of the intermountain region - Intermountain Forest; Range Experiment Station (Ogden, Utah) (Intermountain Forest & Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1966)

Checklist of vascular plants of the Ottawa-Hull region, Canada = Liste des plantes vasculaires de la râegion d'Ottawa-Hull, Canada - Gillett, John M. (John Montague), 1918 -2014 (National Museum of Natural Sciences, National Museums of Canada, 1978)

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

Checklists for the CORINE Biotopes Programme and its application in the PHARE countries of Central and East Europe: including comparisons with relevant conventions and agreements on the conservation of European species and habitats - WCMC (EC, 1994)

Chemical interactions among milkweed plants (asclepiadaceae) and lepidopteran herbivores - Cohen, James A., 1952 - (1983)

The chemical synthesis of vital products and the interrelations between organic compounds - Meldola, Raphael, 1849 -1915 (E. Arnold, 1904)

Chloroplast pigments and chromatographic analysis - Strain, Harold H. (Harold Henry), 1904 - (Pennsylvania State University, 1958)

Christmas Island - Long, Charles R. (Charles Robert), 1936 - (1964)

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)

Class book of botany : being an introduction to the study of the vegetable kingdom - Balfour, John Hutton, 1808 -1884 (Adam and Charles Black, 1854)

Class-book of botany : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada - Wood, Alphonso, 1810 -1881 (A.S. Barnes & Co, 1874)

Class book of botany. Being outlines of the structure, physiology and classification of plants. With a flora of all parts of the United States and Canada - Wood, Alphonso, 1810 -1881 (A.S. Barnes & Burr, 1860)

A class-book of botany, designed for colleges, academies, and other seminaries ... Illustrated by a flora of the northern, middle, and western states; particularly of the United States north of the Capitol, lat. 38 3/4 - Wood, Alphonso, 1810 -1881 (Manufacturing Co., S. Ide, agent, 1847)

A class-book of botany, designed for colleges, academies, and other seminaries ... Illustrated by a flora of the northern, middle, and western states; particularly of the United States north of the Capitol, lat. 38 3/4 - Wood, Alphonso, 1810 -1881 (Manufacturing Co., S. Ide, agent, 1848)

The classification of flowering plants - Rendle, A. B. (Alfred Barton), 1865 -1938 (University press, 1904)

The classification of flowering plants - Rendle, A. B. (Alfred Barton), 1865 -1938 (Univ. Press, 1904)

Claytonia : newsletter of the Arkansas Native Plant Society - Arkansas Native Plant Society. (The Society], 1996)

Claytonia : newsletter of the Arkansas Native Plant Society - Arkansas Native Plant Society. (The Society], 2005)

Claytonia : newsletter of the Arkansas Native Plant Society - Arkansas Native Plant Society. (The Society], 2007)

Claytonia : newsletter of the Arkansas Native Plant Society - Arkansas Native Plant Society. (The Society], 2014)

Le Cocciniglie italiane viventi sugli agrumi: pt.1-3 - Berlese, Antonio, 1863 -1927 (E. Pergola, 1894)

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)

Coffee : a monograph of the economic species of the genus Coffea L - Cheney, Ralph Holt, 1896 - (New York University Press, 1925)

Colombia Bajo Caguán-Caquetá - Field Museum of Natural History. (The Field Museum, 2019)

Colombia: La Lindosa, Capricho, Cerritos - Field Museum of Natural History. (The Field Museum, 2018)

Colombia, Perú : bajo Putumayo-Yaguas-Cotuhé - Field Museum of Natural History. (Field Museum, Keller Science Action Center, 2021)

Color polymorphism in Sphingid caterpillars (Lepidoptera: Sphingidae) - Fink, Linda S. (1989)

Commercial botany of the nineteenth century. A record of progress in the utilisation of vegetable products in the United Kingdom, and the introduction of economic plants into the British colonies, during the present century - Jackson, John Reader, 1837 -1920 (Cassell & company, limited, 1890)

Common Florida angiosperm families - Zomlefer, Wendy B., 1954 - (Biological Illustrations, 1900)

Common medicinal plants of Darjeeling and the Sikkim Himalayas - Biswas, Kalipada, 1899 - (Supt., Govt. Print., West Bengal Govt. Press, 1956)

Common trees of Puerto Rico and the Virgin Islands - Wadsworth, Frank H. (U.S. Dept. of Agriculture, Forest Service, 1964)

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

The commonly occuring wild plants of Canada a flora for the use of beginners - Spotton, H. B. (Henry Byron), 1844 -1933 (W.J. Gage, 1887)