Alphonse Louis Pierre Pyrame de Candolle (28 October 1806 – 4 April 1893) was a French-Swiss botanist, the son of the Swiss botanist Augustin Pyramus de Candolle.He first devoted himself to the study of law, but gradually drifted to botany and finally succeeded to his father's chair at the University of Geneva. He published a number of botanical works, including continuations of the Prodromus in collaboration with his son, Anne Casimir Pyrame de Candolle.