Antoine Laurent de Jussieu

Antoine Laurent de Jussieu (1748-1836) was a botanist who classified many of the families used today. Prior to him, Linnaeus classified plants into families based on the number of stamens and pistils. This put a lot of unrelated plants together and split some related ones apart. Jussieu classified plants based on (?). His name is abbreviated as "Juss." after the names of families and genera.