L. C. Leach

• A revision of Huernia R. Br. (Asclepiadaceae)
• A revision of Stapelia L. (Asclepiadaceae)
• A second contribution towards a new classification of Stapelieae (Asclepiadaceae) with a review of Tridentea Haw. and miscellaneous notes on Stapelia L. and a taxonomic review of Euphorbia gariepina Boiss., from S. Africa and Angola