Guignard, Léon

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Guignard, Léon Gender: M
Jean Louis Léon Guignard
born on 13 April 1852 at 19:00 (= 7:00 PM )
Place Mont sur Vaudrey, France, 46n58, 5e36
Timezone LMT m5e36 (is local mean time)
Data source
Quoted BC/BR
Rodden Rating AA
Collector: Lescaut
Astrology data s_su.18.gif s_aricol.18.gif 23°58' s_mo.18.gif s_aqucol.18.gif 21°28 Asc.s_libcol.18.gif 27°31'

Léon Guignard (Bust)
photo: Siren-Com, license gfdl


French pharmacist and botanist credited along with Russian biologist Sergei Navashin as the co-discoverer of double fertilization in flowering plants. The two men made their discoveries independent of each other, Navashin in 1898 and Guignard in 1899. He also introduced a new method for detecting the presence of hydrocyanic acid in plants. In addition, he conducted significant research on the origin and structure of integuments for a large number of seeds. He died on 7 March 1928 in Paris, aged 75.

Link to Wikipedia biography


Source Notes

Grazia Bordoni's Science database quotes Gauquelin.


  • Vocation : Science : Biology (Pharmacist and botanist)
  • Vocation : Writers : Textbook/ Non-fiction
  • Notable : Famous : First in Field