The structure and development of mosses and ferns (Archegoniatae) (Macmillan, 1918)

Structure and development of the sporophylls and sporangia of isoetes - Smith, Robert Wilson. ([s.n.], 1900)

The student's flora of the British Islands - Hooker, Joseph Dalton, 1817 -1911 (Macmillan and Co, 1870)

The student's flora of the British islands - Hooker, Joseph Dalton, 1817 -1911 (Macmillan, 1884)

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

A student's text-book of botany - Vines, Sydney Howard, 1849 -1934 (Sonnenschein, 1894)

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 in fossil botany - Scott, Dukinfield Henry, 1854 -1934 (A. and C. Black, 1909)

Studies in fossil botany - Scott, Dukinfield Henry, 1854 -1934 (Black, 1920)

Studies in the physiology and morphology of some California Hepaticæ - Humphrey, H. B. (Harry Baker), 1873 -1955 (The Academy, 1908)

Studies of plant life in Canada; or, Gleanings from forest, lake and plain - Traill, Catherine Parr Strickland, 1802 -1899 (A.S. Woodburn, 1885)

The study of the biology of ferns by the collodion method. : for advanced and collegiate students - Atkinson, George Francis, 1854 -1918 (Macmillan and Co, 1894)

Sub-alpine plants : or, Flowers of the Swiss woods and meadows - Thompson, Harold Stuart, 1870 -1940 (Routledge, 1912)

Sub-alpine plants : or, flowers of the Swiss woods and meadows - Thompson, Harold Stuart, 1870 -1940 (G. Routledge & Sons, 1912)

La subregión fitogeográfica costarricense - Sociedad Nacional de Agricultura de Costa Rica. (Sociedad Nacional de Agricultura de Costa Rica, 1909)

Sudentenflora : Eine Auswahl charakteristischer Gebirgspflanzen, nach natürlichen Familien unter Berücksichtigung des Linnéschen Systems - Winkler, Willibald, 1854 - (C. Heinrich, 1900)

Summa Vegetabilium Scandinaviæ systematice coordinatorum - Swartz, Olof, 1760 -1818 (1814)

A summary of the new ferns which have been discovered or described since 1874 - Baker, John Gilbert, 1834 -1920 (Clarendon Press, 1892)

A summary of the new ferns which have been discovered or described since 1874 - Baker, John Gilbert, 1834 -1920 (Clarendon, 1892)

A summer in Greenland - Seward, A. C. (Albert Charles), 1863 -1941 (At the University press, 1922)

A summer in Greenland - Seward, A. C. Sir, (Albert Charles), 1863 -1941 (University Press, 1922)

Supplément à la flore de la Mayenne [1 and 2] - Léveillé, H. (Hector), 1863 -1918 (Ed. Monnoyer, 1897)

A supplement to Baines' Flora of Yorkshire, with a map : part first, the flowering plants and ferns by John Gilbert Baker : part second, the mosses of the county by John Nowell - Baker, John Gilbert, 1834 -1920 (William Pamplin, 1854)

A supplement to F. Hamilton Davey's Flora of Cornwall - Thurston, Edgar, 1855 -1935 (Oscar Blackford, Royal Printeries, 1922)

Supplement to The ferns of southern India and British India : containing a revised list of all the ferms of India, Ceylon, Birmah, and the Malay peninsula and 45 plates of hitherto unfigured species - Beddome, R. H. (Richard Henry), 1830 -1911 (printed by Gantz Brothers, 1876)

Supplementum Florae Lapponicae, quam edidit Dr. Georgius Wahlenberg - Sommerfelt, Søren Christian, 1794 -1838 (Typis Borgianis et Gröndahlianis, 1826)

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)

Supplementum Sylloges florae Europaeae - Nyman, Carl Fredrik, 1820 -1893 (Sumptu et typis N.M. Lindh, 1865)

Supplementum tentaminis pteridographiae, continens genera et species ordinum dictorum marattiaceae, ophioglossaceae, osmundaceae, schizaeaceae et lygodiaceae - Presl, K. B. 1794 -1852 (E typographia Cass. reg. Aulica filiorum Amadei Haase, 1845)

Sur la flore de la Serra do Itatiaya au Brésil - Dusén, P. (Per), 1855 -1926 (Imprensa Nacional, 1905)

A survey and record of Woolwich and West Kent containing descriptions and records, brought up-to-date, of geology, botany, zoology, archaeology and industries of the district, with a brief photographic commentary, in commemoration of the 12th Annual Congress, 1907, of the South Eastern Union of Scientific Societies - Grinling, C. H. (Labour Representation Print. Co, 1909)

Survey for Botrychium paradoxum in the vicinity of Storm Lake, Deerlodge National Forest - U.S. Fish; Wildlife Service (Montana Natural Heritage Program, 1993)

Survey of rare vascular plants in Fidler-Greywillow Wildland Provincial Park - Alberta. Parks; Protected Areas Division. (Alberta Community Development, Parks and Protected Areas, 2005)

Survey of rare vascular plants in La Butte Creek wildland provincial park - Alberta. Parks; Protected Areas Division. (Alberta Community Development, Parks and Protected Areas, 2005)

Surveys for significant plant resources and related vegetation types for the Missoula Field Office of the Bureau of Land Management in the Hoodoo Mountain and Flint Creek watersheds - Montana Natural Heritage Program. (Montana Natural Heritage Program, 2006)

Surveys for significant plant resources and related vegetation types for the Missoula Field Office of the Bureau of Land Management : 2006 survey results - Montana Natural Heritage Program. (Montana Natural Heritage Program, 2007)

Svensk botanik - Swartz, Olof, 1760 -1818 (Tryckt hos C. Delén, 1802)

Svensk botanik - Swartz, Olof, 1760 -1818 (Tryckt hos C. Delén, 1826)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1907)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1908)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1909)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1910)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1911)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1913)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1914)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1915)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1916)