Records of the Botanical Survey of India - Botanical Survey of India. (Office of Supt. of Govt. Print., India, 1904)

Records of the Botanical Survey of India - Botanical Survey of India. (Office of Supt. of Govt. Print., India, 1913)

Records of the Botanical Survey of India - Botanical Survey of India. (Office of Supt. of Govt. Print., India, 1912)

Records of the Botanical Survey of India - Botanical Survey of India. (Office of Supt. of Govt. Print., India, 1919)

Records of the Botanical Survey of India - Botanical Survey of India. (Office of Supt. of Govt. Print., India, 1953)

Records of the Botanical Survey of India - Botanical Survey of India. (Office of Supt. of Govt. Print., India, 1921)

Recueil des travaux botaniques néerlandais - Koninklijke Nederlandse Botanische Vereniging. (Société botanique néerlandaise, 1904)

Reevaluation of vegetational characteristics at the CERC Field Research Facility, Duck, North Carolina - Coastal Engineering Research Center (U.S.). Field Research Facility. (The Center, 1983)

Reisen in Britisch-Guiana in den Jahren 1840-1844 : nebst einer Fauna und Flora Guiana's nach Vorlagen von Johannes Müller, Ehrenberg, Erichson, Klotzsch, Troschel, Cabanis und Andern - Ehrenberg, Christian Gottfried, 1795 -1876 (J. J. Weber, 1847)

Reliquiæ Baldwinianæ: selections from the correspondence of the late William Baldwin ... with occasional notes, and a short biographical memoir - Muhlenberg, Henry, 1753 -1815 (Kimber and Sharpless, 1843)

Reliquiae Dewevreanae ou Enumération systématique des plantes récoltées par Alfr. Dewèvre en 1895-96 dans l'Etat Indépendant du Congo - De Wildeman, Emile 1866 -1947 (1901)

Reliquiae Formánekianae : enumeratio critica plantarum vascularium, quas itineribus in Haemo Peninsula et Asia Minore (Bithynia) factis collegit Dr. Ed. Formánek - Vandas, Karel, 1861 -1923 (Comitiorum Marchionatus Moraviae, 1909)

Reliquiae Haenkeanae, seu, Descriptiones et icones plantarum :quas in America meridionali et boreali, in insulis Philippinis et Marianis collegit Thaddaeus Haenke - Šternberg, Kašpar, Graf, 1761 -1838 (Apud J.G. Calve, 1830)

Reliquiae Haenkeanae seu Descriptiones et icones plantarum, quas in America meridionali et boreali, in insulis Philippinis et Marianas collegit Thaddaeus Haenke, philosophiae doctor, phytographus regis hispaniae - Presl, K. B. 1794 -1852 (J.G. Calve, 1835)

Repertorium florae Ligusticae - De Notaris, Giuseppe, 1805 -1877 (Ex Regio Typographeo, 1844)

Repertorium specierum novarum regni vegetabilis Beihefte (Verlag des Repertoriums, 1922)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1916)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1938)

Report for the year ... - Colonial Herbarium (Durban, South Africa). (Colonial Herbarium, 1894)

Report of botanical survey of southern and central Louisiana made during the year 1870 - Featherman, A. (Americus), 1822 - (Printed at the office of the Republican, 1871)

Report of the ... Australasian Association for the Advancement of Science - Australasian Association for the Advancement of Science. (The Association, 1892)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1895)

Report of the flora of Westchester County - Bolton, Robert, 1814 -1877 (Roper & Burdge, 1880)

Report of the geological exploration of the fortieth parallel - Eaton, Daniel Cady, 1834 -1895 (G.P.O, 1871)

Report of the Geological Survey of Ohio - Geological Survey of Ohio. (Nevins & Myers, state printers, 1893)

Report of the geological survey of Ohio - Geological Survey of Ohio. (Nevins & Meyers, 1893)

Report of the government scientific expedition to the Bellenden- Ker range upon the flora and fauna of that part of the colony - Hedley, Charles, 1862 -1926 (J. C. Beal, Govt. Printer, 1889)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1904)

Report on the herbaceous flowering plants of Massachusetts, arranged according to the natural orders of Lindley, and illustrated chiefly by popular descriptions of their character, properties, and uses - Dewey, Chester, 1784 -1867 (Folsom, Wells, and Thurston, Printers to the University, 1840)

Report on the scientific results of the voyage of H.M.S. Challenger during the years 1873-76 under the command of Captain George S. Nares ... and the late Captain Frank Tourle Thomson, R.N - Thomson, C. Wyville, Sir, (Charles Wyville), 1830 -1882 (Neill, 1885)

Report on the United States and Mexican boundary survey :made under the direction of the secretary of the Interior - Emory, William H. 1811 -1887 (C. Wendell, printer, 1859)

Report on the United States and Mexican boundary survey :made under the direction of the secretary of the Interior - Emory, William H. 1811 -1887 (C. Wendell, printer, 1857)

Report on the vegetation of the Andaman Islands. Accompanied by a report on the forests and a map - Kurz, Sulpiz, 1833? -1878 (Office of Superintendent of Government Printing, 1870)

Report on the work of the Horn Scientific Expedition to Central Australia - Horn, William Austin, 1841 -1922 (Dulau, 1896)

Report upon United States Geographical surveys west of the one hundredth meridian - Geographical Surveys West of the 100th Meridian (U.S.) (G.P.O, 1878)

Reports of the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1903)

Reports of the Survey. Botanical series - Geological; Natural History Survey of Minnesota. (1892)

Reports on the herbaceous plants and on the quadrupeds of Massachusetts - Dewey, Chester, 1784 -1867 (Folsom, Wells, and Thurston, 1840)

Reports on the herbaceous plants and on the quadrupeds of Massachusetts : published agreeably to an order of the Legislature by the Commissioners on the Zoological and Botanical Survey of the State - Massachusetts. Zoological; Botanical Survey. (Folsom, Wells, and Thurston, 1840)

Resultate der Wissenschaftlichen Erforschung des Balatonsees - Hungary. Földmm̋uvelésügyi Minisztérium. (E. Hölzel, 1897)

A review of the references to the Hortus malabaricus of Henry Van Rheede Van Draakenstein [sic] - Reede tot Drakestein, Hendrik van, 1637 -1691 (Printed at the Cambrian-Office, by Murray and Rees, 1839)

A revised catalogue of the indigenous flowering plants and ferns of Ceylon - Willis, J. C. (John Christopher), 1868 -1958 (H.C. Cottle, Govt. Printer, 1911)

Revised checklist of New York State plants - Mitchell, Richard S., 1938 - (University of the State of New York, State Education Dept, 1997)

Revisio generum plantarum:vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum ... - Kuntze, Otto, 1843 -1907 (A. Felix [etc.], 1891)

Revision of the flora of the Bombay presidency Parts III-XI Gramineae - Blatter, Ethelbert, 1877 -1934 (s.n.], 1927)

Revue des questions scientifiques - Société scientifique de Bruxelles. (Société scientifique de Bruxelles, 1903)

Revue des travaux scientifiques - France. Ministère de l'Instruction publique (Imprimerie nationale, 1894)

La Revue scientifique du Limousin - Le Gendre, Charles. (Impr.-Librairie Ve. H. Ducourtieux, 1893)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1907)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1908)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1912)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1918)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1929)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1930)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1934)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1935)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1936)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1937)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1939)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1940)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1942)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1945)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1953)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1952)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1965)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1973)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1974)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1976)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1981)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1994)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1998)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 2004)

ri ben zhi wu ming hui - Honda, Masaji 本田正次 1897 -1984 (san sheng tang)

Richardiana (Tropicalia, 2001)

La Riforma della nomenclatura botanica trattata dal Congresso botanico internazionale di Genova 1892 - Underwood, Lucien Marcus, 1853 -1907 (Tip. Sordo-muti, 1892)

Rocky Mountain wild flower studies; an account of the ways of some plants that live in the Rocky Mountain region - Longyear, Burton Orange, 1868 - (Merchants Publishing Co, 1909)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1980)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 2006)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 2009)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1940)

The rough-headed corn stalk-beetle - Fox, Henry 1875 -1951 (U.S. Dept. of Agriculture, 1924)

Sandusky flora. A catalogue of the flowering plants and ferns growing without cultivation in Erie county, Ohio, and the peninsula and islands of Ottawa County - Moseley, Edwin Lincoln, 1865 -1948 (Clapper, 1899)

Sargentia :a continuation of the contributions from the Arnold Arboretum of Harvard University - Arnold Arboretum. (The Arnold Arboretum of Harvard University, 1949)

Schilderung der deutschen pflanzenfamilien vom botanisch-descriptiven und physiologischchemischen standpunkte - Hoffmann, Hermann, 1819 -1891 (Georg Friedrich Hener's Verlag, 1846)

Schule der systematischen Botanik - Hallier, Ernst, 1831 -1904 (W.G. Korn, 1878)

Schulflora für die sterreichischen Südeten- und Alpenländer (mit Ausschluss des Küstenlandes) - Fritsch, Karl, 1864 -1934 (C. Gerold, 1900)

Science progress - Burdett, Henry C., Sir, 1847 -1920 (Scientific Press, 1894)

Scientific memoirs (1853)

Scientific survey of Porto Rico and the Virgin Islands - New York Academy of Sciences. (New York Academy of Sciences, 1919)

The Seaside sparrow, its biology and management : proceedings of a symposium held at Raleigh, North Carolina 1-2 October 1981 - U.S. Fish; Wildlife Service (The Survey, 1983)

A second edition of Webber's "Appendix to the catalogue of the flora of Nebraska" - Bessey, Charles E. (Charles Edwin), 1845 -1915 ([University of Nebraska?, 1892)

Second systematic census of Australian plants, with chronologic, literary and geographic annotations - Mueller, Ferdinand von, 1825 -1896 (Printed for the Victorian Government by McCarron. Bird & Co, 1889)

The sedges of Jamaica - Britton, Nathaniel Lord, 1859 -1934 (1907)