Ludwig Eduard Theodor Loesener

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Ludwig Eduard Theodor Lösener
Born23 November 1865
Died2 June 1941 (1941-06-03) (aged 75)

Ludwig Eduard Theodor Lösener (23 November 1865 – 2 June 1941) was a German botanist who collected widely in the field in Germany: Amrum island (1912), the Alps, the Black Forest, Bavaria, Rügen island and Tyrol in modern Austria. His speciality was the Aquifoliaceae of the world. He also studied cultivars of Ilex species. His name is often spelled as 'Loesener' in English sources.

In 1941, botanist Albert Charles Smith published a genus of flowering plants belonging to the family Celastraceae, as Loeseneriella in his honour.[1]


  • Theodor Lösener, Ludwig Eduard Theodor. (1890), Vorstudien zu einer Monographie der Aquifoliaceen, Inaugural-Dissertation, von Theodor Lösener,... (in German), Berlin: Druck von Mesch und Lichtenfeld
  • Theodor Lösener, Ludwig Eduard Theodor. (1901), Monographia Aquifoliacearum, auctore Th. Loesener. Pars I [-II]. (in Latin), Halle: Druck von E. Karras


The abbreviation Loes. is used to indicate Ludwig Eduard Theodor Lösener as an authority in the description and scientific classification of plants. The International Plant Names Index lists more than 1800 taxa attributed Lösener.[2]


  1. ^ "Loeseneriella A.C.Sm. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2021-03-16.
  2. ^ "You searched on: Author standard form = Loes". International Plant Names Index. 2005. Retrieved 2009-07-26.

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