A comparison of the structure of the flowers of various genera of the tribe Passifloraceae-Passifloreae supported the view of staminodial origin of the disk. The East African genus Schlechterina is kept separate from the West African genus Crossostemma. The genus Efulensia from Equatorial Africa is recognized beside the Madagascan genus Deidamia. Revised key to the genera of the Passifloreae, together with short descriptions.