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, 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, 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 the neighboring parts of Nebraska, South Dakota, and British Columbia - Rydberg, Per Axel, 1860 -1931 (The author, 1922)

Flora of the southeastern United States; being descriptions of the seed-plants, ferns and fern-allies growing naturally in North Carolina, South Carolina, Georgia, Florida, Tennessee, Alabama, Mississippi, Arkansas, Louisiana, and in Oklahoma and Texas east of the one hundredth meridian - Small, John Kunkel, 1869 -1938 (The author, 1913)

Flora of the southeastern United States; being descriptions of the seed-plants, ferns and fern-allies growing naturally in North Carolina, South Carolin, Georgia, Florida, Tennessee, Alabama, Mississippi, Arkansas, Louisiana and the Indian territory and in Oklahoma and Texas east of the one-hundredth meridian - Small, John Kunkel, 1869 -1938 (The author, 1903)

A flora of the State of New-York, comprising full descriptions of all the indigenous and naturalized plants hitherto discovered in the state; with remarks on their economical and medicinal properties - Torrey, John, 1796 -1873 (Carroll and Cook, Printers to the Assembly, 1843)

Flora of the state of Washington - Piper, Charles V. (Charles Vancouver), 1867 -1926 (Govt. Print. Off, 1906)

Flora of the state of Washington - Piper, Charles V. (Charles Vancouver), 1867 -1926 (G.P.O, 1906)

The flora of the upper Susquehanna and its tributaries - Clute, Willard Nelson, 1869 -1950 (W.N. Clute, 1898)

Flora of the U.S.S.R - Botanicheskiĭ institut (Akademii︠a︡ nauk SSSR) (Israel Program for Scientific Translations, 1998)

Flora of the U.S.S.R - Botanicheskiĭ institut (Akademii︠a︡ nauk SSSR) (Israel Program for Scientific Translations, 2001)

Flora of the U.S.S.R - Botanicheskiĭ institut (Akademii︠a︡ nauk SSSR) (Israel Program for Scientific Translations, 2004)

Flora of the vicinity of New York; a contribution to plant geography - Taylor, Norman, 1883 -1967 (1915)

Flora of the Wordsworth country - Hayes, Thomas R. (Bakewell, 1899)

Flora of tropical Africa - Oliver, Daniel, 1830 -1916 (L. Reeve and co, 1877)

Flora of Vermont. List of ferns and seed plants growing without cultivation - Kirk, George Leavitt, 1878 -1966 (Free Press Print. Co, 1915)

Flora of Vermont; a list of the fern and seed plants growing without cultivation - Vermont Botanical Club. (Free Press Association, 1900)

Flora of West Virginia - Millspaugh, Charles Frederick, 1854 -1923 (1896)

A flora of western middle California - Jepson, Willis Linn, 1867 -1946 (Encina Publishing Company, 1901)

Flora of Willoughby, Vermont - Kennedy, George G. (George Golding), 1841 -1918 (1904)

Flora of Winneshiek County - Shimek, Bohumil, 1861 -1937 (Iowa Geological Survey, 1906)

Flora of Winneshiek County - Shimek, Bohumil, 1861 -1937 (1906)

The flora of Yorkshire : with two plates - Baines, Henry. (Longman, Orme, Brown, Green, and Longman, 1840)

Flora Orientalis : sive, Enumeratio plantarum in Oriente a Graecia et Aegypto ad Indiae fines hucusque observatarum - Boissier, Edmond, 1810 -1885 (H. Georg, 1867)

Flora Oxoniensis, exhibens plantas in agro Oxoniensi sponte crescentes, secundum systema sexuale distributas - Sibthorp, John, 1758 -1796 (Fletcher and Hanwell, 1794)

Flora padovana; ossia, Prospetto floristico e fitogeografico delle piante vascolari indigene inselvatichite o largamente coltivate crescenti nella provincia di Padova; con notizie storico-bibliografiche sulle fonti della flora ed illustrata da 20 tavole - Béguinot, Augusto, 1875 -1940 (Prem. Soc. coop. tip, 1909)

Flora Palæstina : quam, venia experientissimae Facult. med. in Reg. Academia Upsaliensi : sub praesidio viri nobilissimi atque experientissimi Dn. Doct. Caroli Linnaei ... - Linné, Carl von, 1707 -1778 (Excud. L.M. Hojer, Reg. Acad. Typogr, 1756)

Flora Parisiensis, ou, Descriptions et figures des plantes qui croissent aux environs de Paris; avec les diffrens noms, classes, ordres et genres qui leur conviennent, rangs suivant la mthode sexuelle de M. Linn, leurs parties caractristiques, parts, proprits, vertus et doses d'usage en mdecine, suivant les demonstrations de botanique qui se font au Jardin du roy - Bulliard, Pierre, 1752 -1793 (P.F. Didot, 1776)

Flora Pedemontana : sive Species plantarum Phanerogamarum in Pedemonte et Liguria sponte nascentium ... - Zumaglini, Antonio Mauritio, 1804 -1866 (J. Favale, 1849)

Flora Petropolitana. Sistens plantas in Gubernio Petropolitano sponte crescentes, tam eas quae olim in Flora Ingrica Krascheninnikovii a Gortero enumeratae sunt, quam novas post annum 1764 hucuque a variis botanicis Petropoli degentibus detectas, nunc vero generice ac specifice descriptas cum additione variarum observationum, atque Russica plantarum denominatione - Sobolewski, Gregor. (Typis Collegii Imperialis Medici, 1799)

Flora piacentina; ossia, Enumerazione sistematica delle piante della provincia di Piacenza, coll'indicazione delle loro stazioni, dei caratteri principali di ciascuna famiglia, dei nomi italiani, di quelli del dialetto piacentino, con osservazioni e note etimologiche - Bracciforti, Alberto, 1838 - (Tip. F. Solari, 1877)

Flora pisana - Savi, Gaetano, 1769 -1844 (Presso Pietro Giacomelli, 1798)