Candolle (French k??d?l) n (Biography) Augustin Pyrame de. 1778?1841, Swiss botanist; his Théorie élémentaire de la botanique (1813) introduced a new system of plant classificationCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014