Chloris platensis argentina - Hicken, Cristóbal M. (Cristóbal María), 1875 -1933 (J.A. Alsina, 1910)

Choice trees, bulbs, flowers and seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pacific Heights Nursery, 1892)

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 & Burr, 1863)

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)

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, 1869)

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

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)

Clavis, classium, ordinum et familiarum atque index generum regni vegetabilis = Diagnostische Uebersichtstafeln des natürlichen Pflanzensystems : nebst vollständigem Gattungsregister - Perleb, Karl Julius, 1794 -1845 (A. Emmerling, 1838)

Les Cleistocactus - Weber, Frédéric-Albert-Constantin 1830 -1903 (Impr. Ventre, 1904)

[Clibrans Ltd. materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1907)

The Coccidae - MacGillivray, Alexander Dyer, 1868 -1924 (Scarab company, 1921)

The Coccidae, tables for the identification of the subfamilies and some of the more important genera and species, together with discussions of their anatomy and life history - MacGillivray, Alexander Dyer, 1868 -1924 (Scarab Company, 1921)

The Coccidae, tables for the identification of the subfamilies and some of the more important genera and species, together with discussions of their anatomy and life history - MacGillivray, Alexander Dyer, 1868 -1924 (Scarab, 1921)

Collection de mémoires pour servir à l'histoire du règne végétal et plus spécialement pour servir de complément à quelques parties du Prodromus regni vegetabilis - Candolle, Augustin Pyramus de, 1778 -1841 (Treuttel et Würtz, 1834)

Colorado hardy cacti - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Las Animas Floral Co, 1936)

Colorado hardy cacti - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Las Animas Floral Co, 1935)

Colorado hardy cacti - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Las Animas Floral Co, 1938)

Colorado wild flowers, shrubs, evergreens, ferns, cacti, etc. : Rockmount Nursery, 1914 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (D.M. Andrews, 1914)

[Comal Springs Nursery materials] - Comal Springs Nursery. (Comal Springs Nursery, 1897)

Commentarii phytographici :quibus varia rei herbariae capita illustrantur - Miquel, Friedrich Anton Wilhelm 1811 -1871 (S. et J. Luchtmans, 1838)

Commercial gardening, a practical & scientific treatise for market gardeners, market growers, fruit, flower & vegetable growers, nurserymen, etc - Weathers, John, 1867 -1928 (The Gresham publishing company, 1913)

Comparative anatomy of the vegetative organs of the phanerogams and ferns - Bary, A. de (Anton), 1831 -1888 (Clarendon Press, 1884)

Compte rendu des séances de la Société de physique et d'histoire naturelle de Genève - Société de physique et d'histoire naturelle de Genève. (Bureau des Archives, 1906)

Comptes rendus hebdomadaires des séances de l'Académie des sciences - Centre national de la recherche scientifique (France) (publiés avec le concours du Centre national de la recherche scientifique par MM. les secrétaires perpétuels, 1841)

Comptes rendus hebdomadaires des séances de l'Académie des sciences - Centre national de la recherche scientifique (France) (publiés avec le concours du Centre national de la recherche scientifique par MM. les secrétaires perpétuels, 1843)

Comptes rendus hebdomadaires des séances de l'Académie des sciences - Centre national de la recherche scientifique (France) (publiés avec le concours du Centre national de la recherche scientifique par MM. les secrétaires perpétuels, 1846)

Comptes rendus hebdomadaires des séances de l'Académie des sciences - Centre national de la recherche scientifique (France) (publiés avec le concours du Centre national de la recherche scientifique par MM. les secrétaires perpétuels, 1848)

Comptes rendus hebdomadaires des séances de l'Académie des sciences - Centre national de la recherche scientifique (France) (publiés avec le concours du Centre national de la recherche scientifique par MM. les secrétaires perpétuels, 1864)

Comptes rendus hebdomadaires des séances de l'Académie des sciences - Centre national de la recherche scientifique (France) (publiés avec le concours du Centre national de la recherche scientifique par MM. les secrétaires perpétuels, 1895)

The conditions of parasitism in plants - MacDougal, Daniel Trembly, 1865 -1958 (Carnegie Institution of Washington, 1910)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1899)

Consolidated stand tables and biodiversity data base for Southwestern forest habitat types - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1990)

Contribución al estudio de la flora de la Sierra de la Ventana - Spegazzini, Cárlos, 1858 -1926 (Ministerio de Obras Públicas de la Provincia de Buenos Aires, Talleres de Publicaciónes del Museo, 1896)

Contribución al estudio de la flora del Tandil - Spegazzini, Cárlos, 1858 -1926 (1901)

A contribution to our knowledge of seedlings - Lubbock, John, Sir, 1834 -1913 (K. Paul, Trench, Trübner, & co., ltd, 1892)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1929)

Contributions from the New York Botanical Garden - New York Botanical Garden (The Garden, 1904)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1890)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1892)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1893)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1906)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1908)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1909)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1912)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1915)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1920)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1925)

Contributions in science - Los Angeles County Museum of Natural History. (The Museum, 1983)

Contributions to western botany.no. 1-18 - Jones, Marcus E. (Marcus Eugene), 1852 -1934 (1929)

Contributions to western botany.no. 1-18 - Jones, Marcus E. (Marcus Eugene), 1852 -1934 (1930)

Correspondence : d'Eprémesnil (Jacques) and Engelmann (George), 1882-1883 - Count d'Eprémesnil, 1827 -1891 (1882)

Correspondence : Guedeney and Engelmann (George), 1870 - Guedeney. (1870)

Correspondence : Haage & Schmidt and Engelmann (George), 1865-1881 - Haage & Schmidt. (1865)

Correspondence : Haage (Friedrich) and Engelmann (George), 1857-1860 - Haage, Friedrich Adolph 1796 -1866 (1857)

Correspondence : Heiden (Friedrich) and Engelmann (George), 1880-1881 - Heiden, Friedr. von der (Friedrich). (1880)

Correspondence : Jacobi (Georg) and Engelmann (George), 1855-1871 - Jacobi, Georg Albano von 1805 -1874 (1855)