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, 1941)

Rocky Mountain rarities from Colorado - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upton Gardens, 1937)

Rocky Mountain rarities from Colorado - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upton Gardens, 1936)

Rocky Mountain rarities from Colorado : plants and seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upton Gardens, 1945)

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, 2006)

Rose, field notebook, 1 - 1912 - Rose, J. N. (Joseph Nelson), 1862 -1928 (1893)

Rosen und Sommerblumen : mit einem Anhang über Gruppenpflanzen, Frühlingsblumen, und Balkonpflanzen - Mütze, Wilhelm. (J. J. Weber, 1910)

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Saguaroland Bulletin - Desert Botanical Garden (Ariz.) (Arizona Cactus and Native Flora Society, 1966)

Saguaroland Bulletin - Desert Botanical Garden (Ariz.) (Arizona Cactus and Native Flora Society, 1968)

Saguaroland Bulletin - Desert Botanical Garden (Ariz.) (Arizona Cactus and Native Flora Society, 1969)

Saguaroland Bulletin - Desert Botanical Garden (Ariz.) (Arizona Cactus and Native Flora Society, 1974)

Saguaroland Bulletin - Desert Botanical Garden (Ariz.) (Arizona Cactus and Native Flora Society, 1977)

The Saier catalog of rare and popular flower seeds, vegetable and grass seeds : garden bulbs - all kinds, gardener's supplies. no. 50-10 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pioneer Seed Company, 1950)

The Saier catalog of rare and popular flower seeds, vegetable and grass seeds : garden bulbs-all kinds, gardener's supplies : over 4,000 species and varieties. no. 48-2 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pioneer Seed Company, 1948)

Samen-Verzeichnis des Staatl. Botanischen Gartens zu Dresden - Technische Universität Dresden. Botanischer Garten. (Koeniglich Botanischer Garten zu Dresden, 1897)

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)

Schönbrunn's Flora, oder, Systematisch geordnetes Verzeichniss der im kais. königl. holländisch-botanischen Hofgarten zu Schönbrunn cultivirten Gewächse - Boos, Joseph. (Im Verlag der Geistingerschen Buchhandlung, 1816)

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Science - American Association for the Advancement of Science. ([s.n.], 1898)

Science - American Association for the Advancement of Science. ([s.n.], 1899)

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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)

Seed annual, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (New England Toro Company, 1936)

Seed annual, 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (New England Toro Company, 1937)

Seed annual, 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (New England Toro Company, 1938)

Seed catalogue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mrs. S.B. Walker, 1902)

Seed catalogue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mrs. S.B. Walker, 1905)

Seed list : native wild flowers of the great Southwest - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.S. Lawrence, 1947)

Seed of western wild flowers, wholesale - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frank H. Rose, 1949)

Seeds and plants : 1951 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl S. English, Jr, 1951)

Seeds and plants : 1952 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl S. English, Jr, 1952)

Seeds and plants : 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl S. English, Jr, 1953)

Seeds, bulbs, plants : 1944 offer 41A - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1944)

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. 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 of so. Calif. natives : 1959 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Elsie W. Cisler, 1959)

Seeds, plants and bulbs : a year-round catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1949)

Seeds, plants and bulbs : a year-round catalog : offer 53B, 1950 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rex D. Pearce, 1950)

Seeds, plants and bulbs : offer no. 61-A, 1954 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pearce Seed Co, 1954)

Seeds, plants and bulbs : offer no. 63A, 1955 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pearce Seed Company, 1955)

Seeds, plants, trees - Payne, Theodore. (Theodore Payne, 1912)

Seeds, plants, trees - Payne, Theodore. (Theodore Payne, 1916)

Selectarum stirpium Americanarum historia, in qua ad Linnaeanum systema determinatae descriptaeque sistuntur plantae illae, quas in insulis Martinica, Jamaica, Domingo aliisque et in vicinae continentis parte, observavit rariores; adjectis iconibus ad autoris archetypa pictis - Jacquin, Nikolaus Joseph, Freiherr von, 1727 -1817 (1780)

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

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

Selected western flora, Manitoba, Saskatchewan, Alberta - Hales, B. J. (Benjamin Jones), 1868 -1945 (the Macmillan Co. of Canada, 1915)

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Semillas recolectadas durante ano ... y que se ofrecen a cambio de otras - Universidad de Valencia. Jardin Botanico. (Imprenta de Manuel Alufre, 1897)

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Sensitive species of Nevada : 1990 report : Bureau of Land Management, Elko District - Clemmer, Glenn H. (Nevada Natural Heritage Program, 1990)

Sensitive species of Nevada : 1990 report : Bureau of Land Management, Las Vegas District - Clemmer, Glenn H. (Nevada Natural Heritage Program, 1990)

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shuang zi ye zhi wu fen lei - Zhong hua jiao yu wen hua ji jin dong shi hui bian yi wei yuan hui 中华教育文化基金董事会编译委员会 (shang wu yin shu guan fa xing)

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SIDA, contributions to botany - Mahler, William F. (W. F. Mahler, etc.], 1977)

SIDA, contributions to botany - Mahler, William F. (W. F. Mahler, etc.], 1985)

SIDA, contributions to botany - Mahler, William F. (W. F. Mahler, etc.], 1998)

SIDA, contributions to botany - Mahler, William F. (W. F. Mahler, etc.], 2002)

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Sitzungsberichte. Abt. 1, Mineralogie, Krystallographie, Botanik, Physiologie der Pflanzen, Zoologie, Paläontologie, Geologie, physische Geographie und Reisen - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Kommission bei A. Hölder, 1916)

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Slovar rodovykh imen rasti͡eniĭ : s perevodom na rossiĭskiĭ i͡azyk, oznacheniem ikh proiskhozhdenii͡a, klassa, k koemu kazhdyĭ rod prinadlezhit i chisla izvi͡estnykh porod kazhdago rasti͡enii͡a, po pokazanii͡am Persona i Shteĭdeli͡a - Martynov, Ivan Ivanovich, 1771 -1833 (V tip. Departamenta narodnago prosvi͡eshchenii͡a, 1826)

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Smithsonian contributions to knowledge - Smithsonian Institution (Smithsonian Institution, 1892)

Smithsonian contributions to paleobiology - Smithsonian Institution (Smithsonian Institution Press, 1977)

Smithsonian contributions to paleobiology - Smithsonian Institution (Smithsonian Institution Press, 1981)

Smithsonian contributions to paleobiology - Smithsonian Institution (Smithsonian Institution Press, 1994)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1877)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1878)

Smithsonian year - Smithsonian Institution (Smithsonian Institution, 1968)

Smithsonian year - Smithsonian Institution (Smithsonian Institution, 1969)

Some common Colorado wild flowers - Roberts, Harold D. (Denver Museum of Natural History, 1953)

The Sonoran Quarterly - Desert Botanical Garden (Ariz.) (Desert Botanical Garden, 2009)

The Sonoran Quarterly - Desert Botanical Garden (Ariz.) (Desert Botanical Garden, 2010)

The Sonoran Quarterly - Desert Botanical Garden (Ariz.) (Desert Botanical Garden, 2013)

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Species plantarum : exhibentes plantas rite cognitas ad genera relatas, cum diferentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas - Linné, Carl von, 1707 -1778 (Junk, 1753)

Species plantarum : exhibentes plantas rite cognitas ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas - Willdenow, Karl Ludwig, 1765 -1812 (impensis G.C. Nauk, 1799)

Species plantarum : exhibentes plantas rite cognitas ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas - Willdenow, Karl Ludwig, 1765 -1812 (impensis G.C. Nauk, 1797)

Species plantarum, exhibentes plantas rite cognitas ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas - Linné, Carl von, 1707 -1778 (Typis Joannis Thomae de Trattner, 1764)

The species problem; a symposium presented at the Atlanta meeting of the American Association for the Advancement of Science, December 28-29, 1955 - Mayr, Ernst, 1904 -2005 (1957)

Spring 1946 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Germain, 1946)

Spring 1947 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Germain, 1947)

Spring flora of Oklahoma, with key - Myers, W. Stanley (William Stanley), 1888 - (Harlow publishing company, 1929)

Spring flora of the Wasatch region - Garrett, A. O. (Albert Osbun), 1870 -1948 (Skelton Publishing, 1911)

The standard cyclopedia of horticulture; a discussion, for the amateur, and the professional and commercial grower, of the kinds, characteristics and methods of cultivation of the species of plants grown in the regions of the United States and Canada for ornament, for fancy, for fruit and for vegetables; with keys to the natural families and genera, descriptions of the horticultural capabilities of the states and provinces and dependent islands, and sketches of eminent horticulturists - Bailey, L. H. (Liberty Hyde), 1858 -1954 (The Macmillan Co.; [etc., etc.], 1916)

The standard cyclopedia of horticulture; a discussion, for the amateur, and the professional and commercial grower, of the kinds, characteristics and methods of cultivation of the species of plants grown in the regions of the United States and Canada for ornament, for fancy, for fruit and for vegetables; with keys to the natural families and genera, descriptions of the horticultural capabilities of the states and provinces and dependent islands, and sketches of eminent horticulturists - Bailey, L. H. (Liberty Hyde), 1858 -1954 (Macmillan, 1919)