Career
From 1887 to 1894 he worked as a plant physiologist at the Faculté des Sciences in Paris. Afterwards, he was a professor of botany at the Faculté des Sciences in Marseille (1894-1935). From 1898 to 1916, he was assistant director, then director of the Musée colonial et du Jardin botanique in Marseille.
He held a deep interest in applied botany, publishing numerous treatises on the agricultural aspects of various plants.
During his career, he worked closely with botanist Joseph Alfred Perrier de la Bâthie, who sent him botanical material from Madagascar. As a taxonomist, he circumscribed many new species native to Madagascar.
Jumellea (family Orchidaceae), named by Rudolf Schlechter, 1914. Jumelleanthus (family Malvaceae), named by Bénédict Pierre Georges Hochreutiner, 1924.