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)

The flora of the Rocky Mountains - Campbell, Robert, 1835 -1921 (s.n, 1900)

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)

Flora of the southeastern Washington and adjacent Idaho - Piper, Charles V. (Charles Vancouver), 1867 -1926 (Press of the New Era Printing Company, 1914)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (American Book Company, 1883)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arr. according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (American Book Co, 1897)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Blakeman, 1889)

Flora of the southern United States: containing abridged descriptions of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Phinney, 1865)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Cambridge Botanical Supply Co, 1897)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Blakeman, Taylor & co, 1883)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Blakeman, Taylor & Co, 1887)

Flora of the southern United States : containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida ; arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Blakeman, Taylor & Co, 1884)

Flora of the Southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Blakeman, Taylor & Co, 1883)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Phinney, 1860)

Flora of the southern United States : containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Blakeman, Taylor & co, 1889)

Flora of the southern United States:containing abridged descriptions of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Phinney, 1860)

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, 1968)

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 vicinity of San Francisco - Behr, H. H. (Hans Herman), 1818 -1904 (1888)

Flora of tropical Africa - Oliver, Daniel, 1830 -1916 (L. Reeve and co, 1868)

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)

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

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 Panormitana; sive, Plantarum prope Panormium sponte nascentium enumeratio Vol. 1, fasc. 1-2 - Parlatore, Filippo, 1816 -1877 (Petri Pensante, 1839)

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 pharmaceutica e alimentar portugueza; ou, Tractado daquelles vegetaes indigenas de Portugal, e outros nelle cultivados, cujos productos são usados, ou susceptiveis de se usar come remedios e alimentos ... - Figueiredo, Jeronymo Joaquim de. (Na typographia da Academia R. das Sciencias, 1825)

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)

Flora Polonica phanerogama, sive, Descriptiones plantarum phanerogamicarum in Regno Poloniae tam sponte nascentium quam continuata cultura solo nostro assuefactarum Linnaeana methodo dispositae praemisso conspectu generali familiarum regni vegetabilis naturalium - Waga, Jacob. (Typ. Stanislai Straeski, 1847)

Flora Pomerano-Rugica; exhibens plantas per Pomeraniam anteriorem Svecicam et Rugiam sponte nascentes, methodo Linneana secundum systema sexuale digestas cum differentiis specificis nominibus Germanicis, officinalibus pharmacopoeorum, locis natalibus, tempore florendi, obscuriorum descriptionibus - Weigel, Christian Ehrenfried, 1748 -1831 (Apud Gottl. Aug. Lange, 1769)

Flora Pyrenaea per ordines naturales gradatim digesta - Penzig, O. (Ottone), 1856 -1929 (U. Hoeplius, 1900)

Flora Pyrenaea per ordines naturales gradatim digesta - Penzig, O. (Ottone), 1856 -1929 (U. Hoeplius, 1901)

Flora regni Borussici : flora des Königreichs Preussen oder Abbildung und Beschreibung der in Preussen wildwachsenden Pflanzen - Dietrich, Albert, 1795 -1856 (Verlag von Ludwig Ochmigke, 1838)

Flora regni Borussici : flora des Königreichs Preussen oder Abbildung und Beschreibung der in Preussen wildwachsenden Pflanzen - Dietrich, Albert, 1795 -1856 (Verlag von Ludwig Ochmigke, 1840)

Flora regni Borussici : flora des Königreichs Preussen oder Abbildung und Beschreibung der in Preussen wildwachsenden Pflanzen - Dietrich, Albert, 1795 -1856 (Verlag von Ludwig Ochmigke, 1841)

Flora regni Borussici : flora des Königreichs Preussen oder Abbildung und Beschreibung der in Preussen wildwachsenden Pflanzen - Dietrich, Albert, 1795 -1856 (Verlag von Ludwig Ochmigke, 1833)

Flora Romana D. Joannis Francisci Maratti ... Opus postumum nunc primum in lucem editum - Maratti, Giovanni Francesco, 1777 (Typis J. Salviucci, 1822)