Joseph Decaisne

It was during this time that he began to study plants brought back by various travelers like those of Victor Jacquemont (1801–1832) from Asia.

He entered in 1824 as a gardener at the Muséum national d'histoire naturelle (French museum of natural history) and became, in 1832, head of the carré des semis section.

He described the following genera of flowering plants: Capanea (now part of Kohleria) and Chrysothemis of the family Gesneriaceae; Sautiera (Acanthaceae); Lepinia, Rhazya (Apocynaceae); Vancouveria (with C.Morren) (Berberidaceae); Ostryopsis (Betulaceae); Dipterygium (Capparidaceae); Brassaiopsis, Cuphocarpus*, Dendropanax*, Didymopanax*, Fatsia*, Oreopanax*, Stilbocarpa*, (* with Planch.)

ex Trecul (Moraceae; Camptotheca (Nyssaceae or Cornaceae); Ephippiandra (Monimiaceae); Pseudais (Thymelaeaceae); Allardia, Lecocarpus, Wollastonia DC.

(Zygophyllaceae); Deherainia (Theophrastaceae); Lopholepis (now a synonym of Perotis )(Poaceae); Asterostemma, Atherandra, Baeolepis Decne.

ex Decne., Melinia, Mitostigma (now part of Philibertia), Nautonia, Nephradenia, Orthosia, Pentopetia, Peplonia, Periglossum, Pherotrichis, Polystemma, Ptycanthera, Pycnoneurum, Pycnostelma Bunge ex Decne., Rhyssostelma, Riocreuxia, Tacazzea, Tassadia, Trichosandra (Asclepiadaceae or Apocynaceae s.l.