Physacanthus nematosiphon (Lindau) Rendle & Britten in Journ. Bot. 47: 378. 1909
- ≡Haselhoffia nematosiphon Lindau in Bot. Jahrb. 43: 351. 1909
- Type: Chevalier 19670
- Type: Chevalier 19670 (P)
- =Physacanthus cylindricus C. B. Clarke in Flora of Tropical Africa 5: 58. 1899
- ≡Haselhoffia cylindrica (C. B. Clarke) Lindau in Bot. Jahrb. 43: 352. 1909
