Plagiosiphon emarginatus (Hutch. & Dalz.) Léonard in Bull. Jard. Bot. Brux. 21: 425. 1951
Unknown type category: Unwin & Smythe 42 ()
- =Monopetalanthus emarginatus Hutch & Dalz., Kew Bull.: 897. 1928
- =Hymenostegia emarginata (Hutch & Dalz.) Milne-Redhead in Flora of West Tropical Africa, éd. 1 2: 606. 1936
- =Tripetalanthus emarginatus (Hutch & Dalz.) A. Chev. in Rev. Bot. appl. 26: 597. 1946
