Syllabus der Vorlesungen über specielle und medicinisch-pharmaceutische Botanik. Eine Uebersicht über das gesammte Pflanzensystem mit Berücksichtigung der Medicinal- und Nutzpflanzen - Engler, Adolf, 1844 -1930 (Gebrüder Borntraeger, 1892)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1982)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1983)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1989)

Symbionticism and the origin of species - Wallin, Ivan Emmanuel, 1883 - (Williams & Wilkins Company, 1927)

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, 1903)

Symbolae Antillanae,seu, Fundamenta florae Indiae Occidentalis - Urban, Ignaz, 1848 -1931 (Fratres Borntraeger ;Paul Klincksieck, 1904)

Symbolae Antillanae,seu, Fundamenta florae Indiae Occidentalis - Urban, Ignaz, 1848 -1931 (Fratres Borntraeger ;Paul Klincksieck, 1923)

Symbolae sinicae :botanische Ergebnisse der Expedition der Akademie der Wissenschaften in Wein nach Südwest-China, 1914-1918 - Handel-Mazzetti, Heinrich, Freiherr von, 1882 -1940 (J. Springer, 1926)

Symbolae sinicae :botanische Ergebnisse der Expedition der Akademie der Wissenschaften in Wein nach Südwest-China, 1914-1918 - Handel-Mazzetti, Heinrich, Freiherr von, 1882 -1940 (J. Springer, 1929)

Symbolae sinicae :botanische Ergebnisse der Expedition der Akademie der Wissenschaften in Wein nach Südwest-China, 1914-1918 - Handel-Mazzetti, Heinrich, Freiherr von, 1882 -1940 (J. Springer, 1931)

Symbolae sinicae :botanische Ergebnisse der Expedition der Akademie der Wissenschaften in Wein nach Südwest-China, 1914-1918 - Handel-Mazzetti, Heinrich, Freiherr von, 1882 -1940 (J. Springer, 1936)

A synonymic catalogue of Homoptera - Distant, William Lucas, 1845 -1922 (Printed by order of the Trustees, 1906)

A synonymic catalogue of Orthoptera - British Museum (Natural History). Department of Zoology. (Printed by order of the Trustees [by Taylor and Francis], 1904)

A synonymic catalogue of Orthoptera - British Museum (Natural History). Department of Zoology. (Printed by order of the Trustees [by Taylor and Francis], 1906)

A synonymic catalogue of Orthoptera - British Museum (Natural History). Department of Zoology. (Printed by order of the Trustees [by Taylor and Francis], 1910)

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

Synopsis of the British Basidiomycetes ; a descriptive catalogue of the drawings and specimens in the Department of botany, British museum - British Museum (Natural History). Department of Botany. (Printed by order of the Trustees of the British museum, 1908)

Synopsis plantarum vascularium Montis Pollini - Terracciano, Nicola. (Tipografia della R. Accademia dei Lincei, 1890)

Synoptical flora of North America - Gray, Asa, 1810 -1888 (American Book Company, 1895)

A synthesis of evolutionary theory - Ross, Herbert H. (Herbert Holdsworth), 1908 -1978 (Prentice-Hall, 1962)

The Syrphid of the Ethiopian region based on material in the collection of the British Museum (Natural history), with descriptions of new genera and species - Bezzi, Mario, 1868 -1927 (Printed by order of the Trustees, 1915)

Systematics in Agriculture Canada at Ottawa, 1886-1986 - Canada. Agriculture Canada (Biosystematics Research Centre, Agriculture Canada, 1986)

Systematische phylogenie - Haeckel, Ernst, 1834 -1919 (Georg Reimer, 1894)

tai wan mu ben zhi wu tu zhi - Liu, Tangrui (guo li tai wan da xue nong xue yuan yin hang)

tai wan mu ben zhi wu tu zhi . xia juan 台湾木本植物图誌.下卷 - Liu, Tangrui 刘棠瑞 (da jin yin shua you xian gong si 大近印刷有限公司, 1962)

The Tasmanian Naturalist - Tasmanian Field Naturalists' Club (Tasmanian Field Naturalists' Club, 1946)

The Tasmanian Naturalist - Tasmanian Field Naturalists' Club (Tasmanian Field Naturalists' Club, 1980)

The Tasmanian Naturalist - Tasmanian Field Naturalists' Club (Tasmanian Field Naturalists' Club, 1981)

The Tasmanian Naturalist - Tasmanian Field Naturalists' Club (Tasmanian Field Naturalists' Club, 1982)

The Tasmanian Naturalist - Tasmanian Field Naturalists' Club (Tasmanian Field Naturalists' Club, 1983)

The Tasmanian Naturalist - Tasmanian Field Naturalists' Club (Tasmanian Field Naturalists' Club, 1985)

The Tasmanian Naturalist - Tasmanian Field Naturalists' Club (Tasmanian Field Naturalists' Club, 1987)

The Tasmanian Naturalist - Tasmanian Field Naturalists' Club (Tasmanian Field Naturalists' Club, 1989)

The Tasmanian Naturalist - Tasmanian Field Naturalists' Club (Tasmanian Field Naturalists' Club, 1994)

The Tasmanian Naturalist - Tasmanian Field Naturalists' Club (Tasmanian Field Naturalists' Club, 2017)

A taxonomic investigation of the Carex macloviana D'Urv. Aggregate in western Canada and Alaska - Whitkus, Richard (University of Alberta, Dept. of Botany, 1981)

Taxonomic literature : a selective guide to botanical publications and collections with dates, commentaries and types. Supplement III, Br-Ca - Mennega, E. A. (Koeltz Scientific Books, 1995)

Taxonomic literature : a selective guide to botanical publications and collections with dates, commentaries and types. Supplement V, Da-Di - Mennega, E. A. (Koeltz Scientific Books, 1998)

Taxonomic literature : a selective guide to botanical publications and collections with dates, commentaries and types. Supplement I, A-Ba - Mennega, E. A. (Koeltz Scientific Books, 1992)

Taxonomic literature : a selective guide to botanical publications and collections with dates, commentaries and types. Supplement VIII, Fres-G - Dorr, Laurence J. (A.R.G. Gantner Verlag K.G, 2009)

Taxonomic literature : a selective guide to botanical publications and collections with dates, commentaries and types. Volume III, Lh-O - Cowan, Richard S., 1921 -1997 (Bohn, Scheltema & Holkema, 1976)

Taxonomic literature : a selective guide to botanical publications and collections with dates, commentaries and types. Supplement VI, Do-E - Mennega, E. A. (Koeltz Scientific Books, 2000)

Taxonomic literature : a selective guide to botanical publications and collections with dates, commentaries and types. Volume VI, Sti-Vuy - Cowan, Richard S., 1921 -1997 (Bohn, Scheltema & Holkema, 1986)

Taxonomic literature : a selective guide to botanical publications and collections with dates, commentaries and types. Volume II, H-Le - Cowan, Richard S., 1921 -1997 (Bohn, Scheltema & Holkema, 1979)

Taxonomic literature : a selective guide to botanical publications and collections with dates, commentaries and types. Volume IV, P-Sak - Cowan, Richard S., 1921 -1997 (Bohn, Scheltema & Holkema, 1983)

Taxonomic literature : a selective guide to botanical publications and collections with dates, commentaries and types. Supplement VII, F-Frer - Dorr, Laurence J. (A.R.G. Gantner Verlag K.G, 2008)

Taxonomic literature : a selective guide to botanical publications and collections with dates, commentaries and types. Supplement IV, Ce-Cz - Mennega, E. A. (Koeltz Scientific Books, 1997)