- Category : 1852-births
- Type : PSE
- Profile : 1/3 - Investigating / Martyr
- Definition : Split - Small (23)
- Incarnation Cross : RAX Tension 3
French botanist, among the early pioneers of phytogeography, phytosociology, and forest ecology. The word relevé for a plant community sample is his invention.
Flahault received his Baccalauréat de Lettres at Douai in 1872, after which he became a gardener at the Jardin des Plantes de Paris. There he came to the notice of Joseph Decaisne (1807–1882), who gave him private lessons, after which he entered the Sorbonne in 1874 to study in the laboratory of Philippe Van Tieghem (1839–1914), obtaining his doctoral degree in 1878. He continued his studies at Uppsala University in 1879 together with Gaston Bonnier, then in 1881 joined the University of Montpellier where in 1883 he became professor of botany, and in 1890 he founded the Institut de Botanique. He died in Montpellier on 3 February 1935, aged 82.