1
Published: 1901
Superior document: Illustrations de la flore du Congo Tome 1, Fasc. 7
2
Published: 1900
Superior document: Illustrations de la flore du Congo Tome 1, Fasc. 6
3
Published: 1899
Superior document: Illustrations de la flore du Congo Tome 1, Fasc. 3
4
Published: 1902
Superior document: Illustrations de la flore du Congo Tome 1, Fasc. 8
5
Published: 1898
Superior document: Illustrations de la flore du Congo Tome 1, Fasc. 2
6
Published: 1899
Superior document: Illustrations de la flore du Congo Tome 1, Fasc. 5
7
Superior document: Annales du Musée du Congo Belge : B, Botanique : Série 1, Iconographies 1
8
Published: 1898
Superior document: Illustrations de la flore du Congo Tome 1, Fasc. 1
9
Published: 1899
Superior document: Illustrations de la flore du Congo Tome 1, Fasc. 4