French botanist (1876-1945).
Marie Antoine Alexandre Guilliermond (19 August 1876 – 1 April 1945) was a French botanist and mycologist who specialized in cytological studies of the yeasts, fungi, and algae. He was among the first to identify sexual reproduction in yeast and published a major review on the yeasts in 1912. Born in Lyons to physician Jacques Guilliermond (1841-1878) and Madeleine Rollet (1856-1893), daughter of professor of hygiene Joseph Rollet, Guilliermond grew up with a numerous physicians in the family. He lost his father at a young age and after his mother remarried he grew up as a shy and reticent you