Per Karl Hjalmar Dusén

Per Karl Hjalmar Dusén (1855–1926) was a Swedish civil engineer, botanist and explorer. As a botanist his interests included pteridology, bryology, and paleobotany. He made botanical expeditions to Africa, Greenland, and South America. During his expeditions to Greenland, he visited Disko Island to catalogue the variety of flowering plants, horsetails and ferns.

Per Karl Hjalmar Dusén
Per Dusén, first from the left
Born1855
Died1926
CitizenshipSweden
Scientific career
Fieldsbotany
Author abbrev. (botany)Dusén

Between 1890 and 1892, Dusén collected nearly 560 leaf fossils preserved in basalt in the vicinity of Mount Cameroon on the west coast of Cameroon. Later, these fossils were studied by the German paleobotanist Paul J. Menzel (1864–1927).

His botanical specimens are at the New York Botanical Garden, being obtained when they acquired the herbarium of Princeton University in 1945.

Honours

More than 200 species were named in his honour, including:

References
  1. Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. ("Dusen", p. 78).
  2. "Catalogue of place names in northern East Greenland". Geological Survey of Denmark. Retrieved 16 September 2019.
  3. IPNI.  Dusén.


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