French phycologist (1796-1871).
Sébastien René Lenormand (2 April 1796, in Condé-sur-Noireau – 10 December 1871) was a French lawyer and botanist who specialized in the field of phycology. From 1817 he studied law in Paris, and following graduation (1820), practiced law in the town of Vire. In 1835 he quit the legal profession, moved to an estate called "Lénaudières", from where he focused his energies towards botany. As a botanist, he created an impressive herbarium, consisting mainly of algae species. Although he never left France, he collected a large number of botanical specimens from naturalists who travelled to all par