Johannes Paulus Lotsy

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Johannes Paulus Lotsy
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Johannes Paulus Lotsy
Born11 April 1867
Died17 November 1931 (1931-11-18) (aged 64)
Nationality Dutch
Known forWorks on evolution and heredity.
Spouse(s)Catharina Christina Goossen
Scientific career
Author abbrev. (botany) Lotsy

Johannes Paulus Lotsy (11 April 1867 – 17 November 1931) was a Dutch botanist, specializing in evolution and heredity. Lotsy was born in Dordrecht and died in Voorburg.



After getting his PhD from Göttingen University he had a teaching positions at Johns Hopkins University (1891–1895) where he was director of the herbarium. From 1896 to 1900 he worked in Java. Then he taught at Leiden University (1904-1909), as a lecturer in Systematic Botany. He became director of the State Herbarium (Rijksherbarium) 1906–1909, then Secretary of the Hollandsche Maatschappij van Wetenschappen.

He founded the Association internationale des Botanistes and was editor of the Botanisches Centralblatt. He proposed a system of plant classification, based on phylogenetics. Lotsy argued for a major role of hybridization in evolution. [1] [2]


India (1895–1900), the United States (1922), Australia and New Zealand (1925), South Africa (1926–27), and Egypt (1930). He also studied the flora of Italy and Switzerland.



  • 2008. Evolution By Means Of Hybridization. Reeditado Maudsley Press. 176 pp.  ISBN   978-1-4097-0261-0
  • 1928. A Popular Account of Evolution
  • 1925. Evolution considered in the light of Hybridization. Ed. Canterbury College by Andrews, Baty & Co. 66 pp.
  • 1916. Evolution by Means of Hybridization. The Hague, Martinus Nijhoff, 166 pp.
  • 1907–1911. Vorträge über botanische Stammesgeschichte gehalten an der Reichsuniversität zu Leiden. Ein Lehrbuch der Pflanzensystematik. In drei Bände. Jena, Verlag von Gustav Fischer. With illustrations.


Lotsy argued that the monocotyledons were diphyletic, with the Spadiciflorae being derived from the dicotyledons (specifically Piperales) and the remainder from a hypothetical ancestor, the Proranales. Hutchinson, who argued for a monophyletic origin, considered this improbable. [3]


Vorträge über botanische Stammesgeschichte [4] [3]

See also

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  1. East, E. M. (1914). A Theory of Evolution. Botanical Gazette 58 (1): 91–93.
  2. Newman, H. H. (1917). Evolution by Means of Hybridization by J. P. Lotsy. Botanical Gazette 63 (2): 153–154.
  3. 1 2 Hutchinson 1959, pp. 513–515.
  4. Lotsy 1911.
  5. IPNI.   Lotsy.