Alexandre Louis Simon Lejeune
Alexandre Louis Simon Lejeune was a physician and botanist.
In 1801 he entered the school of medicine in Paris, but was subsequently forced to abandon his studies due to military conscription. After finishing his military duties in late 1804, he relocated to Ensival as a physician. Three years later, he settled permanently in his hometown of Verviers.
With Richard Courtois, he was co-author of "Compendium florae belgicae". He was a mentor to Marie-Anne Libert, who he introduced to Augustin Pyramis de Candolle. Libert named the genus Lejeunea in Lejeune's honor in 1820.Botanical works
- Flore des environs de Spa, 1811 - Flora native to the environs of Spa.
- Revue de la flore des environs de Spa, 1824 - Review of flora native to the environs of Spa.
- De Libertia, novo graminum genere, Commentatio 1825 - On the genus Libertia.
- Compendium florae belgicae ; Leodii, Apud P. J. Collardin, 1828–1836 - Compendium of Belgian flora.
