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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1993)

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1996)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1997)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 2001)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 2000)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 2003)

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)

Richardiana (Tropicalia, 2005)

Richardiana (Tropicalia, 2007)

Richardiana (Tropicalia, 2015)

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Riviera nature notes : a popular account of the more striking plants and animals of the Riviera and the Maritime Alps - Comerford Casey, G. E. (George Edward), 1846 -1912 (Labour Press limited, 1898)

Riviera nature notes / a popular account of the more striking plants and animals of the Riviera and the Maritime Alps - Comerford Casey, G. E. (George Edward), 1846 -1912 (Bernard Quaritch, 1903)

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

Rivista di biologia (Università di Perugia, etc, 1922)

Rivista di patologia vegetale - Istituto di patologia vegetale (Università di Milano) (Tipografia del Seminario, 1905)

Rock garden perennials, 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Paramount Gardens, 1940)

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

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, 1952)

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Rostlinnictví : cili Návod k snadnému urcení a pojmenování rostlin v Cechách, Morave a jiných zemích Rakouského mocnárství domácích - Sloboda, Daniel. (V kommissí u Fr. Rivnáce, 1852)

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Sable Island, with a catalogue of its vascular plants - St. John, Harold, 1892 -1991 (Gray Herbarium of Harvard University, 1921)

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Sage notes : Idaho Native Plant Society newsletter - Idaho Native Plant Society. (Idaho Native Plant Society, Pahove Chapter, 2016)

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)

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 (Press of Clapper Printing Co, 1899)

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, 1947)

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Schedulae Orchidianae. no. 1-10 - Ames, Oakes, 1874 -1950 ([Earnshaw Press Corp.], 1925)

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)

A school flora : for the use of elementary botanical classes - Watts, W. Marshall (Longmans, Green, 1910)

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

Schulflora der Provinz Schleswig-Holstein, des Fürstentums Lübeck, sowie des Gebietes der freien Städte Hamburg und Lübeck - Knuth, Paul, 1854 -1899 (O. Lenz, 1888)

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

Schulflora von Österreich - Willkomm, Moritz, 1821 -1895 (A. Pichler's Witwe & Sohn, 1892)

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A season among the wildflowers - Wood, Henry. (.W. S. Sonnenschein, 1883)

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)

A second supplement to, and summary of Stewart and Corry's flora of the North-east of Ireland - Corry, Thomas H. (Thomas Hughes), 1859 -1883 (Belfast Naturalists' Field Club, 1923)

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 seed plants, ferns, and fern allies of the Austin Region - Young, Mary Sophie, 1919 (The University, 1920)

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Seeds of rare plants. Offer no. 21 B - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1934)

Seeds of rare plants. Offer no. 21 C - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1934)

Seeds of rare plants. Offer no. 21 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1934)

Seeds of rare plants : Offer 23 C - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1935)

Seeds of rare plants : Offer no. 23 B - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1935)

Seeds of rare plants : offer no. 25 B - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1935)

Seeds of rare plants : offer no. 27B - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1937)

Seeds of rare plants : offer no. 27C - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1937)

Seeds of rare plants : offer no. 27D - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1937)

Seeds of rare plants : offer no. 29A - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1938)

Seeds of rare plants : offer no. 29B - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1938)

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)

Selected western flora : Manitoba, Saskatchewan, Alberta - Hales, B. J. (Benjamin Jones), 1868 -1945 (Macmillan Company of Canada, 1919)

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shan xi wei he liu yu zhi za cao 陕西渭河流域之杂草 - Kung, Hsien-Wu, 1897 -1984 (xi bei nong xue yuan 西北农学院, 1954)

shang hai ye sheng zhi wu - Qian, Shixin, Liu Mingzhuang & Shun Qingsheng (shang hai ke xue ji shu chu ban she)

shang hai zhi wu ming lu - Xu, Binsheng (ke ji wei sheng chu ban she)

shen nong jia zhi wu 神农架植物 - Zhongguo ke xue yuan. Wuhan zhi wu yan jiu suo 中国科学院武汉植物 研究所 (hu bei ren min chu ban she 湖北人民出版社, 1980)

sheng wu ming cheng he sheng wu xue shu yu de ci yuan - Jaeger, Edmund C. (Edmund Carroll) 1887 -1983 (ke xue chu ban she, 1979)

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Shortia : a newsletter of the Western Carolina Botanical Club - Western Carolina Botanical Club. (The Club, 2009)

Shortia : a newsletter of the Western Carolina Botanical Club - Western Carolina Botanical Club. (The Club, 2023)

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SIDA, contributions to botany - Mahler, William F. (W. F. Mahler, etc.], 1965)