Smithsonian contributions to botany - Smithsonian Institution (Smithsonian Institution Press, 2023)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1927)

Species Blancoanae :a critical revision of the Philippine species of plants described by Blanco and by Llanos - Merrill, Elmer D. (Elmer Drew), 1876 -1956 (Bureau of Printing, 1918)

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, 1805)

Spices - Ridley, H. N. (Henry Nicholas), 1855 -1956 (Macmillan and co., limited, 1912)

Spices and condiments - McNair, James Birtley, 1889 -1967 (Field Museum of Natural History, 1930)

Spices - Ridley, H. N. (Henry Nicholas), 1855 -1956 (Macmillan, Ltd, 1912)

Stahl's grosses illustriertes Kräuterbuch; ausführliche Beschreibung aller auf den Bergen und in den Thälern, auf den Wiesen und in den Wäldern wild wachsenden Pflanzen und Kräuter ... (Stahl, 1900)

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)

Standardized plant names; a catalogue of approved scientific and common names of plants in American commerce - Olmsted, Frederick Law, 1870 -1957 (1923)

Stein's Orchideenbuch. Beschreibung, Abbildung und Kulturanweisung der empfehlenswertesten Arten. Mit 184 in den Text gedruckten Abbildungen - Stein, Berthold. (P. Parey, 1892)

Strasburger's Text-book of botany - Strasburger, Eduard, 1844 -1912 (Macmillan, 1921)

The student's natural history - Baird, William, 1803 -1872 (C. Griffin, 1863)

A student's text-book of botany - Vines, Sydney Howard, 1849 -1934 (Swan Sonnenschein, 1895)

A student's text-book of botany - Vines, Sydney Howard, 1849 -1934 (S. Sonnenschein & co, 1896)

A students' text-book of botany - Vines, Sydney Howard, 1849 -1934 (S. Sonnenschein, 1895)

Studies of fungous parasites belonging to the genus Glomerella - United States. Bureau of Plant Industry. (Govt. Print. Off, 1913)

Sturtevant's notes on edible plants - Hedrick, U. P. (J.B. Lyon, 1919)

Suggestions received by the Agricultural & Horticultural Society of India for extending the cultivation and introduction of useful and ornamental plants : with a view to the improvement of the agricultural and commercial resources of India - Agricultural & Horticultural Society of India. (Bishop's College Press, 1841)

Supplementum primum Prodromi florae Novae Hollandiae: exhibens proteaceas novas quas in Australasia legerund, DD. Baxter, Caley, Cunningham, Freser et Sieber - Brown, Robert, 1773 -1858 (Typis R. Taylor, 1830)

Swamp buggy excursions in the "swamp - angel" : exotic plants, tropical oddities - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Everglades Enterprises, 1948)

Sweet-scented flowers and fragrant leaves, interesting associations gathered from many sources, with notes on their history and utility - McDonald, Donald, 1857 - (Charles Scribner's sons, 1895)

Sylloge florae congolanae [Phanerogamae] - Durand, Th. (Théophile), 1855 -1912 (Maison A. de Boeck, 1909)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1897)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1913)

Symbiosis, a socio-physiological study of evolution - Reinheimer, H. (Headley, 1920)

Symbiosis; a socio-physiological study of evolution - Reinheimer, H. (Headley brothers, 1920)

Symbolae Antillanae,seu, Fundamenta florae Indiae Occidentalis - Urban, Ignaz, 1848 -1931 (Fratres Borntraeger ;Paul Klincksieck, 1903)

Symbolae Antillanae,seu, Fundamenta florae Indiae Occidentalis - Urban, Ignaz, 1848 -1931 (Fratres Borntraeger ;Paul Klincksieck, 1898)

Symbolae Antillanae,seu, Fundamenta florae Indiae Occidentalis - Urban, Ignaz, 1848 -1931 (Fratres Borntraeger ;Paul Klincksieck, 1909)