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)

Reports of explorations and surveys : to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean - Baird, Spencer Fullerton, 1823 -1887 (A.O.P. Nicholson printer, 1855)

Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean - Baird, Spencer Fullerton, 1823 -1887 (A.O.P. Nicholson, Printer [etc.], 1856)

Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean - Baird, Spencer Fullerton, 1823 -1887 (A.O.P. Nicholson, Printer [etc.], 1853)

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

Reports on zoology for 1843, 1844 - Ray Society. (Printed for the Ray society, 1847)

Resources of the southern fields and forests, medical, economical, and agricultural being also a medical botany of the Confederate States : with practical information on the useful properties of the trees, plants and shrubs - Porcher, Francis Peyre, 1825 -1895 (Steam-power Press of Evans & Cogswell, 1863)

Resources of the southern fields and forests, medical, economical, and agricultural - Porcher, Francis Peyre, 1825 -1895 (Walker, Evans & Cogswell, printers, 1869)

Retail price list no. 2 : native and exotic cacti and other succulents - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rio Grande Valley Cactus Garden, 1941)

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)

Revista chilena de historia natural - Museo de Historia Natural de Valparaíso (Valparaíso, Chile) (Litografia e Impr. Industrial (F. Peters), 1921)

Revista de la Academia Canaria de Ciencias - Academia Canaria de Ciencias. (Academia Canaria de Ciencias, 2000)

Revista de la Facultad de Letras y Ciencias - Universidad de La Habana. Facultad de Letras y Ciencias. (Universidad de La Habana, 1905)

Revue de botanique; bulletin mensuel de la Société Française de Botanique - Société française de botanique. (Au secrétariat de la Société, 1893)

Revue de la famille des Cacte´es :avec des observations sur leur ve´ge´tation et leur culture ainsi que sur celles des autres plantes grasses - Candolle, Augustin Pyramus de, 1778 -1841 (A. Belin, 1829)

Revue des travaux scientifiques - France. Ministère de l'Instruction publique (Imprimerie nationale, 1887)

Revue horticole (Librairie agricole de la maison rustique, 1841)

Revue horticole (Librairie agricole de la maison rustique, 1843)

Revue horticole (Librairie agricole de la maison rustique, 1844)

Revue horticole (Librairie agricole de la maison rustique, 1846)

Revue horticole (Librairie agricole de la maison rustique, 1847)

Revue horticole (Librairie agricole de la maison rustique, 1851)

Revue horticole (Librairie agricole de la maison rustique, 1852)

Revue horticole (Librairie agricole de la maison rustique, 1856)

Revue horticole (Librairie agricole de la maison rustique, 1857)

Revue horticole (Librairie agricole de la maison rustique, 1858)

Revue horticole (Librairie agricole de la maison rustique, 1862)

Revue horticole (Librairie agricole de la maison rustique, 1864)

Revue horticole (Librairie agricole de la maison rustique, 1891)

Revue horticole (Librairie agricole de la maison rustique, 1914)

Revue horticole (Librairie agricole de la maison rustique, 1916)

Revue scientifique du Bourbonnais et du centre de la France - Olivier, Ernest, 1844 -1914 (Impr. É. Auclaire, 1888)

La Revue scientifique du Limousin - Le Gendre, Charles. (Impr.-Librairie Ve. H. Ducourtieux, 1906)

Revue zoologique - Société Cuvierienne. (Société cuvierienne, 1846)

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)

Rhipsalis in the West Indies - Britton, Nathaniel Lord, 1859 -1934 (New York Botanical Garden, 1909)

Rhododendrons, iris, peonies, evergreens, ornamental shrubs : spring 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cassel Nursery, 1933)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1955)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1956)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1967)

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

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

Rocky Mountain flowers : an illustrated guide for plant-lovers and plant-users - Clements, Frederic E. (Frederic Edward), 1874 -1945 (H. W. Wilson, 1920)

Rocky mountain flowers; an illustrated guide for plantlovers and plant-users - Clements, Frederic E. (Frederic Edward), 1874 -1945 (the H.W. Wilson company, 1914)

Rocky Mountain rarities from Colorado - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upton Gardens, 1938)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1992)

Die Rohstoffe des Pflanzenreiches versuch einer technischen Rohstofflehre des Pflanzenreiches - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1873)

The romance of plant life, interesting descriptions of the strange and curious in the plant world - Elliot, G. F. Scott (George Francis Scott), 1862 -1934 (J. B. Lippincott, 1907)