Alstonia
Alstonia, Asclepiadeae: 64. 1810
- ≡Pala in Ann. Mus. Paris 15: 346. 1810
- Type: Alstonia scholaris
- Type: Alstonia scholaris
- =Blaberopus in Prodr. 8: 410. 1844
- Type: Alstonia venenata
- Type: Blaberopus venenatus
- =Winchia in Prodr. 8: 326. 1844
- Type: Alstonia rostrata
- Type: Winchia calophylla
- =Amblyocalyx in Benth. & Hook.f., Gen. Pl. 2: 689. 1876
- Type: Amblyocalyx beccarii
- Type: Alstonia angustifolia
- =Paladelpha in Bull. Mus. Hist. Nat. (Paris) 19: 299. 1947
- Type: Paladelpha angustiloba
- Type: Alstonia angustiloba