Sylloge algarum omnium hucusque cognitarum - Boston Society of Natural History. (Sumptibus auctoris, 1903)

Sylloge algarum omnium hucusque cognitarum - Boston Society of Natural History. (Sumptibus auctoris, 1905)

Sylloge algarum omnium hucusque cognitarum - Boston Society of Natural History. (Sumptibus auctoris, 1907)

Sylloge algarum omnium hucusque cognitarum - Boston Society of Natural History. (Sumptibus auctoris, 1889)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1788)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1889)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1892)

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, 1898)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1901)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1902)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1905)

Sylloge generum specierumque cryptogamarum, quas in variis operibus descriptas iconibusque illustratas, nunc ad diagnosim reductas, nonnullasque novas interjectas - Montagne, Jean François Camille, 1784 -1866 (J.-B. Baillire, 1856)

Sylva sylvarum; or, A natural history, in ten centuries. Whereunto is newly added the History natural and experimental of life and death, or of the prolongation of life - Bacon, Francis, 1561 -1626 (Printed by J. R. for William Lee, and are to be sold by the booksellers of London, 1670)

Sylva sylvarum: or, A naturall history. In ten centuries; whereunto is newly added the History naturall and experimentall of life and death, or, Of the prolongation of life - Bacon, Francis, 1561 -1626 (Printed by A.M. for William Lee, 1658)

Symbolae ad floram Brasiliae centralis cognoscendam - Warming, Eugenius, 1841 -1924 (Naturhistoriske Forening i Kjöbenhavn, 1876)

Symbolae physicae, seu, Icones et descriptiones corporum naturalium novorum aut minus cognitorum : quae ex itineribus per Libyam Aegyptum Nubiam Dongalam Syriam Arabiam et Habessiniam publico institutis sumptu Friderici Guilelmi Hemprich et Christiani Godofredi Ehrenberg : studio annis MDCCCXX-MDCCCXXV redierunt - Schumann, K. (Karl) 1851 -1904 (Ex Officina Academica, venditur a Mittlero, 1828)

Synonymia botanica locupletissima generum, sectionum vel subgenerum ad finem anni 1858 promulgatorum : In forma conspectus systematici totius regni vegetabilis schemati Endlicheriano adaptati - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Sumptibus T. Fischer, 1870)

Synopsis der mitteleuropaïschen flora - Graebner, Paul, 1871 -1933 (W. Engelmann, 1896)

Synopsis Diatomearum, oder, Versuch einer systematischen Zusammenstellung der Diatomeen - Kützing, Friedrich Traugott, 1807 -1893 (s.n, 1834)

Synopsis methodica stirpium Britannicarum : in qua tum notae generum characteristicae traduntur, tum species singulae breviter describuntur: ducentae quinquaginta plus minus novae species partim suis locis inseruntur, partim in appendice seorsim exhibentur : cum indice & virium epitome - Ray, John, 1627 -1705 (Prostant apud Sam. Smith ad insignia principis in coemeterio D. Pauli, 1690)

Synopsis mycologiae Venetae secundum matrices - Cuboni, Giuseppe, 1852 -1920 (Typis Seminarii, 1886)

Synopsis of British seaweeds - Harvey, William H. (William Henry), 1811 -1866 (L. Reeve, 1857)