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.], 1998)

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1999)

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 2002)

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

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

Rhoipteleaceae, Juglandaceae, Thymelaeaceae, Proteaceae Primulaceae - Muséum national d'histoire naturelle (France) (1992)

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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, 1946)

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, 1951)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1957)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1978)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1979)

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, 1982)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 2005)

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)

Rubber-content of North American plants - Hall, Harvey Monroe, 1874 -1932 (Carnegie Institution of Washington, 1921)

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Saguaroland Bulletin - Desert Botanical Garden (Ariz.) (Arizona Cactus and Native Flora Society, 1975)

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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)

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Saxifragaceae, Crypteroniaceae, Droseraceae Hamamelidaceae, Haloragaceae - Muséum national d'histoire naturelle (France) (1965)

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

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

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A selected bibliography of insectvascular plant associational studies - Sanderson, Milton W. (Milton William) (Agricultural Research Service, U.S. Dept. of Agriculture, 1967)

A selected bibliography on management of western ranges, livestock, and wildlife - Renner, Frederic Gordon, 1897 - (U.S. Dept. of Agriculture, 1938)

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Sensitive plant species survey at the southern end of the Elkhorn Mountains, Broadwater and Jefferson Counties, Montana - United States. Bureau of Land Management. (Montana Natural Heritage Program, 1995)

Sensitive plant species survey, Garfield and McCone Counties, Montana - United States. Bureau of Land Management. (Montana Natural Heritage Program, 1994)

Sensitive plant survey in the Horse Prairie Creek drainage, Beaverhead County, Montana, Butte District, Bureau of Land Management - United States. Bureau of Land Management. (Montana Natural Heritage Program, 1995)

Sensitive plant survey in the Tendoy Mountains, Beaverhead County, Montana - Lesica, Peter. (Montana Natural Heritage Program, 1994)

Sensitive plant survey in the Tobacco Root Mountains, Madison County, Montana, Beaverhead and Deerlodge National Forests - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1995)

Sensitive plant survey of the Sage Creek Area, Beaverhead County, Montana, Dillon Resource Area, Bureau of Land Management - United States. Bureau of Land Management. (Montana Natural Heritage Program, 1995)

Sensitive plant survey of the Tendoy Mountains, in the Beaverhead National Forest, Beaverhead County, Montana - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1995)

Sensitive plant surveys, 1989 : U.S. Forest Service, Region 1, Gallatin National Forest - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1989)

Sensitive plant surveys in the Big Belt and Elkhorn Mountains, U.S.D.A. Forest Service, Region 1, Helena National Forest, Montana - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1993)

Sensitive plant surveys in the Bull River and adjacent drainages, U.S.D.A. Forest Service, Region 1, Kootenai National Forest, Montana - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1990)