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Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1931)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1936)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1937)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1938)

Publications in botany - National Museum of Natural Sciences (Canada) (The Museum, 1974)

Publications in botany - National Museum of Natural Sciences (Canada) (The Museum, 1982)

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Quarterly Journal of Science, Literature and the Arts - Royal Institution of Great Britain. (1827)

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Rare and endangered plants of Puerto Rico : a committee report - United States. Soil Conservation Service. (U.S. Dept. of Agriculture, Soil Conservation Service in cooperation with the Department of Natural Resources, Commonwealth of Puerto Rico, 1975)

Rare and endangered vascular plant species in Massachusetts : as abridged from Coddington and Field, 1978 - Massachusetts. Dept. of Environmental Management. (Massachusetts Dept. of Environmental Management], 1979)

Rare native plants of Massachusetts - Massachusetts. Division of Fisheries; Wildlife. (Division of Fisheries and Wildlife, 1989)

Reading Naturalist. Reading - Reading Natural History Society.

Realizing nature's potential : proceedings of the William L. Brown Symposium honoring Dr. Gordon Cragg - Miller, James Stuart, 1953 - (Missouri Botanical Garden, 2011)

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Red list of the endemic plants of the Caucasus : Armenia, Azerbaijan, Georgia, Iran, Russia, and Turkey - Missouri Botanical Garden. (Missouri Botanical Garden Press, 2014)

Regni vegetabilis systema naturale, sive Ordines, genera et species plantarum secundum methodi naturalis normas digestarum et descriptarum - Candolle, Augustin Pyramus de, 1778 -1841 (sumptibus sociorum Treuttel et Würtz, 1821)

Reise in den äussersten Norden und Osten Sibiriens während der Jahre 1843 und 1844 mit Allerhöchster Genehmigung auf Veranstaltung der Kaiserlichen Akademie der Wissenschaften zu St. Petersburg ausgeführt und in Verbindung mit vielen Gelehrten - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (Buchdr. der K. Akademie der Wissenschaften : Zu haben bei Eggers, 1856)

Reise in Ostafrika in den Jahren 1903-1905 : mit Mitteln der Hermann und Elise geb. Heckmann Wentzel-Stiftung : Wissenschaftliche Ergebnisse - Voeltzkow, Alfred, 1860 -1946 (E. Schweizerbartsche Verlagsbuchhandlung, 1917)

Reisen in Amur-Land und auf der Insel Sachalin : im Auftrage der Kaiserlich-Russischen Geographischen Gesellschaft ausgefuehrt - Schmidt, Friedrich, 1832 -1908 (Commissionaires de l'Académie impériale des sciences, 1868)

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)

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)

Rendiconti - Reale Accademia dei Lincei (l'Accademia, 1889)

Répertoire des noms génériques mentionnés dans l'Index kewensis et ses quinze premiers suppléments = Guide to the generic names appearing in the Index Kewensis and its fifteen supplements = Repertorio de los nombres genericos enumerados en el Index Kewensis y sus quince suplementos = Repertorium der im Index Kewensis und seinen fuenfzehn ersten Supplementen erwaehnten Gattungsnamen - Rouleau, Ernest 1916 -1991 (Châtelain, 1981)

Repertorium annuum literaturae botanicae periodicae - Bemmelen, J. A. van. (Erven Loosjes, 1873)

Repertorium botanices systematicae - Walpers, Wilhelm Gerhard, 1816 -1853 (Sumtibus Friderici Hofmeister, 1842)

Repertorium botanices systematicae - Walpers, Wilhelm Gerhard, 1816 -1853 (Sumtibus Friderici Hofmeister, 1843)

Repertorium botanices systematicae - Walpers, Wilhelm Gerhard, 1816 -1853 (Sumtibus Friderici Hofmeister, 1844)

Repertorium botanices systematicae - Walpers, Wilhelm Gerhard, 1816 -1853 (Sumtibus Friderici Hofmeister, 1845)

Repertorium botanices systematicae - Walpers, Wilhelm Gerhard, 1816 -1853 (Sumtibus Friderici Hofmeister, 1846)

Repertorium botanicum, oder, Versuch einer systematischen Darstellung der neuesten Leistungen im ganzen Umfange der Pflanzenkunde - Dierbach, Johann Heinrich, 1788 -1845 (Meyersche Hof-Buchh, 1831)

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

Repertorium specierum novarum regni vegetabilis (Selbstverlag des Herausgebers, 1914)

Report / Botanical Exchange Club and Society of the British Isles - Botanical Exchange Club; Society of the British Isles. (1913)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1923)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1831)

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 Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1901)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1912)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1914)

Report of the State Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, 1901)

Report on the geology, mineralogy, botany, and zoology of Massachusetts : made and published by order of the government of that state : in four parts: Part I. Economical geology. Part II. T opographical geology. Part III. Scientific geology. Part IV. Catalogues of animals and plants : with a descriptive list of the specimens of rocks and minerals collected for the government : illustrated by numerous wood cuts and an atlas of plates - Massachusetts. Geological Survey. (Press of J.S. and C. Adams, 1833)

Report on the geology, mineralogy, botany, and zoology of Massachusetts - Massachusetts. Geological Survey. (Press of J.S. and C. Adams, 1833)

Report on the geology, mineralogy, botany, and zoology of Massachusetts - Massachusetts. Geological Survey. (J.S. and C. Adams, 1835)

Report on the progress and condition of the U.S. National Museum for the year ending June 30 ... - United States National Museum (G.P.O, 1908)

Report on the vegetation of the Andaman Islands. Accompanied by a report on the forests and a map - Kurz, Wilhelm Sulpiz, 1834 -1878 (Office of Superintendent of Government Printing, 1870)

A report upon the boreal flora of the Sierra Nevada of California - Smiley, Frank Jason, 1880 - (University of California Press, 1921)

Reports and papers on botany - Grisebach, A. (August), 1814 -1879 (Printed for the Ray society, 1846)

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

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

A review of literature concerning the evolution of monocotyledons : with four diagrams in the text - Bancroft, N. (The Botany School, 1914)

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, mit erläuterungen - Kuntze, Otto, 1843 -1907 (A. Felix [etc., etc.], 1891)

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)

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.], 1898)

Revista do Museu Paulista - Museu Paulista (O Museu, 1927)

Rheinische Flora. Beschreibung der wildwachsenden und cultivirten Pflanzen des Rheingebietes vom Bodensee bis zur Mosel und Lahn, mit besonderer Beru¨cksichtigung des Grossherzogthums Baden - Döll, Johann Christof, 1808 -1885 (H.L. Brnner, 1843)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1904)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1905)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1916)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1920)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1927)

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.], 1938)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1943)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1947)

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1949)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1960)

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1969)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1972)

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

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1977)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1979)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1980)

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1982)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1986)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1987)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1989)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1990)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1991)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1992)