From 1883 to 1887, he studied
pharmacy at the
Université libre de Bruxelles. In 1891, he began work as a preparateur at the
Botanical Garden of Brussels, an institution where he later served as director. In 1892, he received his doctorate in sciences (academic advisor,
Leo Errera) and in 1926 attained the title of professor.[1][2]
Prodrome de la flore algologique des Indes Néerlandaises (Indes Néerlandaises et parties des territoires de Bornéo et de la Papuasie non Hollandaises), 1897 – Prodome of phycological flora in the
Netherlands East Indies.
Illustrations de la flore du Congo, 1898 to 1920 (with
Théophile Alexis Durand, 1855–1912) – Illustrations of Congolese flora.
Les algues de la flore de Buitenzorg : essai d'une flore algologique de Java, 1900 – Algae of
Buitenzorg; an essay on algae of
Java.
Les plantes tropicales de grande culture, 1902 – Agricultural tropical plants.
Notices sur des plantes utiles ou intéressantes de la flore du Congo, 1903 – Useful and interesting plants of the Congo.
Etudes de systématique et de géographie botaniques sur la flore du Bas- et du Moyen-Congo, 1903 – Studies on
systematics and
phytogeography of the lower and middle Congo.
Les phanérogames des Terres Magellaniques., 1905 –
Phanerogams of Magellanic regions.
Documents pour l'ètude de la geo-botanique congolaise, 1913 – Documents for the study of Congolese
geobotany.
Contribution à l'étude de la flore du Katanga, 1921 – Contribution to the study of flora native to Katanga.
Sur des plantes médicinales ou utiles du Mayumbe (Congo Belge), 1938 – On
medicinal and useful plants of
Mayumbe.[3]