Richardiana (Tropicalia, 2006)

Richardiana (Tropicalia, 2005)

Richardiana (Tropicalia, 2007)

Richardiana (Tropicalia, 2008)

Richardiana (Tropicalia, 2009)

Richardiana (Tropicalia, 2010)

Richardiana (Tropicalia, 2011)

Richardiana (Tropicalia, 2014)

Richardiana (Tropicalia, 2015)

Rivermont Orchids, Signal Mountain, Tennessee - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Clint McDade & Sons, 1951)

Riverview Orchids : greenhouses, Anderson Blvd., East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1958)

Riverview Orchids : greenhouses - Anderson Boulevard, East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1955)

Riverview Orchids : greenhouses - Anderson Boulevard, East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1954)

Riverview Orchids : greenhouses - Anerson Boulevard, East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1956)

Riverview Orchids : greenhouses - Anerson Boulevard, East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1950)

Riverview Orchids : greenhouses, Anerson Boulevard, East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1957)

Riverview Orchids, greenhouses, East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1947)

Rivista di biologia (Università di Perugia, etc, 1919)

Rivista di patologia vegetale - Istituto di patologia vegetale (Università di Milano) (Tipografia del Seminario, 1909)

Rivista di patologia vegetale - Istituto di patologia vegetale (Università di Milano) (Tipografia del Seminario, 1911)

Robert J. Halliday's guide & catalogue of all garden supplies vegetable flower & field seeds plants roots vines etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Robert J. Halliday, 1888)

Rod McLellan orchids, 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rod McLellan Co, 1953)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1935)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1937)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1943)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1945)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1948)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1950)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1951)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1952)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1956)

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, 1984)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1989)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 2004)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 2007)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 2008)

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

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 2010)

Roehrs Nursery : at the sign of the tree : [catalog] - Roehrs, Julius, Company. (Julius Roehrs Co, 1916)

The romance of natural history - Gosse, Philip Henry, 1810 -1888 (J. Nisbet, 1862)

The romance of natural history. 2d series - Gosse, Philip Henry, 1810 -1888 (J. Nisbet, 1861)

Royal Palm Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Royal Palm Nurseries, Reasoner Bros, 1904)

Royal Palm Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reasoner Bros, 1906)

Royal Palm Nurseries : 1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reasoner Bros, 1907)

Royal Palm Nurseries : native and exotic plants, trees, shrubs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reasoner Brothers, 1905)

Rumphius gedenkboek 1702-1902 - Rumpf, Georg Eberhard, 1627 -1702 (Koloniaal Museum, 1902)

Ryerson August specials : seeds, seedlings, mature plants, August, 1959, special number one - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Daniel Ryerson, 1959)

Ryerson expansible orchid folder - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Daniel Ryerson, 1952)

Saier's garden magazine : a manual of rare flowers, their selection and culture. Vol. 3, no. 6 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Harry E. Saier, 1954)

Sanders' orchid guide, rev. (1927) ed. containing all the best known species, varieties, and natural hybrids of orchids in cultivation. Their native countries, descriptions, seasons of flowering, best methods of cultivation, temperatures, &c. ... - Sanders, St. Albans. (Sanders, 1927)

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

The Scale - Systematic Entomology Laboratory (U.S.) (Systematic Entomology Lab, 1983)

Schedulae Orchidianae. no. 1-10 - Ames, Oakes, 1874 -1950 ([Earnshaw Press Corp.], 1922)

Schedulae Orchidianae. no. 1-10 - Ames, Oakes, 1874 -1950 ([Earnshaw Press Corp.], 1923)

Schedulae Orchidianae. no. 1-10 - Ames, Oakes, 1874 -1950 ([Earnshaw Press Corp.], 1924)

Schedulae Orchidianae. no. 1-10 - Ames, Oakes, 1874 -1950 ([Earnshaw Press Corp.], 1930)

Schilderung der deutschen Pflanzenfamilien; vom botanisch-descriptiven und physiologisch-chemischen Standpunkte - Hoffmann, Hermann, 1819 -1891 (Wirth, 1851)

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

Schirmer's Orchids - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Shirmer's Orchids, 1948)

Schirmer's Orchids : 1950 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Shirmer's Orchids, 1950)

Schirmer's Orchids : July 1st 1950 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Shirmer's Orchids, 1950)

Schriften der Naturforschenden Gesellschaft in Danzig - Naturforschende Gesellschaft in Danzig. (Auf Kosten der Naturforschenden Gesellschaft, 1876)

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

Schweizerische Zeitschrift für Gartenbau (Verlag von Meyer und Zeller, 1847)

Schweizerische Zeitschrift für Gartenbau (Verlag von Meyer und Zeller, 1848)

Schweizerische Zeitschrift für Gartenbau (Verlag von Meyer und Zeller, 1850)

Schweizerische Zeitschrift für Land- und Gartenbau (Verlag von Meyer und Zeller, 1844)

Science - American Association for the Advancement of Science. ([s.n.], 1906)

Science - American Association for the Advancement of Science. ([s.n.], 1911)

Science-gossip (Simpkin Marshall, Hamilton, Kent & Co, 1897)

Science progress - Burdett, Henry C., Sir, 1847 -1920 (Scientific Press, 1895)

A second century of orchidaceous plants - Bateman, Jas. (James), 1811 -1897 (L. Reeve & co, 1876)

Seeds and plants imported - United States. Department of Agriculture. (G.P.O, 1911)

Seeds, plants & bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitcher & Manda, 1897)

Seeds, plants & bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitcher & Manda, United States Nurseries, 1896)

Seeds, plants and bulbs : a year-round catalog : 1952, offer 57A - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1952)

Seeking the best ... - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (McHutchison & Company, 1948)

Select orchidaceous plants [Second series] - Warner, Robert (L. Reeve, 1865)

La Semaine horticole ([s.n.], 1897)