1837 postulierte er in "Sur le hymenium des champignons," dass die Ständerpilze ihre Sporen in den Basidien und die Schlauchpilze die ihren in den Asci bilden. ###>In his 1837 paper "Sur le hymenium des champignons", he provided an early, comprehensive description of the basidium and cystidium of basidiomycete fungi, and was able to establish the role that the basidium played in spore production.