An ecological survey in northern Michigan - Adams, Charles C. (Charles Christopher), 1873 -1955 (Wynkoop Hallenbeck Crawford co., state printers, 1906)

An ecological survey of Isle Royale, Lake Superior - Adams, Charles C. (Charles Christopher), 1873 -1955 (Wynkoop Hallenbeck Crawford Co., State Printers, 1909)

Economic plants of Porto Rico - Cook, O. F. (Orator Fuller), 1867 -1949 (Govt. Print Off, 1903)

Elementary botany - Atkinson, George Francis, 1854 -1918 (Holt, 1908)

Elementary botany - Atkinson, George Francis, 1854 -1918 (Holt, 1898)

An elementary course of botany : structural, physiological, and systematic - Henfrey, Arthur, 1819 -1859 (John Van Voorst, 1878)

Elementary flora of the Northwest - Rigg, George B. (George Burton) (American Book Company, 1914)

Elementary flora of the Northwest - Rigg, George B. (George Burton) (American book company, 1914)

Elementary notes on conifers - Church, A. H. (Arthur Harry), 1865 -1937 (Oxford University Press, 1920)

The elements of botany for beginners and for schools - Gray, Asa, 1810 -1888 (American book company, 1901)

Elements of botany : structural, physiological, systematical, and medical - Lindley, John, 1799 -1865 (Printed for Taylor and Walton, 1841)

Embryogenesis in plants - Wardlaw, C. W. (Claude Wilson), 1901 - (Methuen, 1955)

Encyclopaedia Coniferae - Silba, John (H.N. Moldenke and A.L. Moldenke, 1986)

An encyclopaedia of trees and shrubs : being the Arboretum et fruticetum britannicum abridged : containing the hardy trees and shrubs of Britain, native and foreign, scientifically and popularly described ; with their propagation, culture, and uses in the arts ; and with engravings of nearly all the species ; abridged from the large edition in eight volumes, and adapted for the use of nurserymen, gardeners, and foresters - Loudon, J. C. (John Claudius), 1783 -1843 (F. Warne, 1869)

Endangered and threatened species of the Southeastern United States including Puerto Rico and the Virgin Islands - United States. Forest Service. (U.S. Forest Service], 1982)

... Ensayo sobre las plantas usuales de Costa Rica - Pittier, Henri, 1857 -1950 (H.L. & J.B. McQueen, inc, 1908)

Ensayo sobre las plantas usuales de Costa Rica - Pittier, Henri, 1857 -1950 (H.L. & J.B. McQueen, 1908)

Entomologische berichten - Nederlandse Entomologische Vereniging (1964)

Entomologische berichten - Nederlandse Entomologische Vereniging (2000)

Enumeratio plantarum in Fennoscandia orientali sponte et subsponte nascentium. Förteckning öfver ormbunkar och fröväxter vildtväxande och förvildade i Finland och angränsande delar af Ryssland. Luettelo saniaisista ja siemenkasveista jotka kasvavat villeinä tai metsistyneinä Suomessa ja siihen rajoittuvissa osissa Venäjää - Lindberg, Harald, 1871 - (Söderström, 1901)

Enumeratio seminum R. Horto Botanico Pisano ... - Orto botanico di Pisa. (Orto botanico di Pisa, 1916)

Enumeratio seminum R. Horto Botanico Pisano ... - Orto botanico di Pisa. (Orto botanico di Pisa, 1933)

Enumeratio systematica fungorum in omnium herbarum europaearum organis diversis hucusque observatorum mentione facta fontium litterariorum diagnoses eorum figurasque proferentium nec non praecipuorum eorum synonymorum numerorumque collectionum plurium venalium species enumeratas - Oudemans, C. A. J. A. (Cornelis Antoon Jan Abraham), 1825 -1906 (apud M. Nijhoff, 1919)

An enumeration of Philippine flowering plants - Merrill, Elmer D. (Elmer Drew), 1876 -1956 (Bureau of Printing, 1922)

An enumeration of plants collected in Sumatra by W. N. and C. M. Bangham - Merrill, Elmer D. (Elmer Drew), 1876 -1956 (The Arnold Arboretum of Harvard University, 1934)

Ergänzungsheft ... der Mitteilungen aus den deutschen Schutzgebieten (E.S. Mittler, 1914)

Erigenia : journal of the Illinois Native Plant Society - Illinois Native Plant Society. (The Society, 1991)

Essays in geobotany in honor of William Albert Setchell - Goodspeed, T. H. (Thomas Harper), 1887 -1966 (University of California Press, 1936)

The essentials of botany - Bessey, Ernst Athearn, 1877 -1957 (H. Holt and company, 1914)

Essentials of college botany - Bessey, Ernst Athearn, 1877 -1957 (H. Holt, 1914)

Essex naturalist : being the journal of the Essex Field Club - Essex Field Club. (The Club, 1918)

An evaluation and record of generally recommended trees and shrubs planted at the Research Station, Sidney, B.C., 1913-1973 - Canada. Agriculture Canada (Agriculture Canada, 1977)

Exkursionsflora von Europa : Anleitung zum Bestimmen der Gattungen der europäischen Blütenpflanzen - Thonner, Franz, 1863 - (R. Friedländer, 1901)

The ferns, fern allies and flowering plants of Rhode Island - Providence Franklin Society. (Providence Franklin Society, 1920)

Field, forest, and wayside flowers; with chapters on grasses, sedges, and ferns; untechnical studies for unlearned lovers of nature - Going, Maud, 1859 -1925 (The Baker and Taylor Company, 1899)

Field Notebook: Russia 1975 - Hickey, Leo (1975)

Fieldbook of native Illinois shrubs - Tehon, L. R. (Leo Roy), 1895 -1954 (Natural History Survey Division, 1942)

Fieldiana. Botany - Field Museum of Natural History. (Chicago Natural History Museum, 1958)

Fieldiana. Botany - Field Museum of Natural History. (Chicago Natural History Museum, 1977)

Fieldiana. Botany - Field Museum of Natural History. (Chicago Natural History Museum, 1971)

Fieldiana. Botany - Field Museum of Natural History. (Chicago Natural History Museum, 1980)

Fieldiana. Botany - Field Museum of Natural History. (Chicago Natural History Museum, 1983)

Fieldiana. Botany - Field Museum of Natural History. (Chicago Natural History Museum, 1990)

Fieldiana. Botany - Field Museum of Natural History. (Chicago Natural History Museum, 2005)

Fifty years of botany; golden jubilee volume of the Botanical Society of America - Botanical Society of America. (McGraw-Hill, 1958)

The first fifty years of the Arnold Arboretum - Sargent, Charles Sprague, 1841 -1927 (1922)

Flora and fauna of Bucks County - Moyer, I. S. (Lewis, 1905)

Flora balearica, étude phytogéographique sur les íles Baléares - Knoche, Herman, 1870 -1945 (Imp. Roumégous et Déhan], 1921)

Flora balearica, étude phytogéographique sur les íles Baléares - Knoche, Herman, 1870 -1945 (Imp. Roumégous et Déhan], 1821)

Flora Brasiliensis, enumeratio plantarum in Brasilia hactenus detectarum :quas suis aliorumque botanicorum studiis descriptas et methodo naturali digestas partim icone illustratas - Martius, Karl Friedrich Philipp von, 1794 -1868 (R. Oldenbourg, 1840)

Flora Brasiliensis, enumeratio plantarum in Brasilia hactenus detectarum :quas suis aliorumque botanicorum studiis descriptas et methodo naturali digestas partim icone illustratas - Martius, Karl Friedrich Philipp von, 1794 -1868 (R. Oldenbourg, 1852)

Flora de Nicaragua - Stevens, Warren Douglas, 1944 - (Missouri Botanical Garden Press, 2001)

Flora de Veracruz (Instituto de Ecología, AC, 2012)

Flora de Veracruz (Instituto de Ecología, AC, 2013)

Flora de Veracruz (Instituto de Ecología, AC, 2014)

Flora de Veracruz (Instituto de Ecología, AC, 2015)

Flora del bajío y de regiones adyacentes - Instituto de Ecología, A C. (Instituto de Ecología, A C, 1992)

Flora del bajío y de regiones adyacentes - Instituto de Ecología, A C. (Instituto de Ecología, A C, 1993)

Flora del bajío y de regiones adyacentes - Instituto de Ecología, A C. (Instituto de Ecología, A C, 1994)

Flora del bajío y de regiones adyacentes - Instituto de Ecología, A C. (Instituto de Ecología, A C, 1995)

Flora del bajío y de regiones adyacentes - Instituto de Ecología, A C. (Instituto de Ecología, A C, 1996)

Flora del bajío y de regiones adyacentes - Instituto de Ecología, A C. (Instituto de Ecología, A C, 1997)

Flora del bajío y de regiones adyacentes - Instituto de Ecología, A C. (Instituto de Ecología, A C, 1998)

Flora del bajío y de regiones adyacentes - Instituto de Ecología, A C. (Instituto de Ecología, A C, 1999)