Notes on the treatment of the genus Rubus (Rosaceae) in the new editions of the Flora of Belgium. The major changes in the treatment of the genus Rubus in the seventh edition of the Nouvelle Flore de la Belgique, du Grand-Duché de Luxembourg, du Nord de la France et des régions voisines and the fourth edition of the Flora van België, het Groothertogdom Luxemburg, Noord-Frankrijk en de aangrenzende gebieden are explained. First, the identification key has been expanded from 63 to 122 species in comparison to the previous edition of the Nouvelle Flore. More than 50 new species are recognized for the region. On the other hand, more than 80 species have been excluded in the new edition, mostly because of doubtful identifications. The taxonomical and nomenclatural changes are commented. Finally, changes in the chorology are shortly given. They are mostly based on the revision of old and new herbarium material.