Contributions to the Botany of India: 38 (Wight 1834).
Lectotype (designated by Rodda 2017) MALAYSIA • Penang?; ex herb. Finlayson, Wallich Asclepiad no. 42 (B = Wallich Catalogue 8166B); K000895121.
Isolectotypes
MALAYSIA • Same data as for the lectotype; K001129114, E00179577.