Scientific name: Bonamia semidigyna (Roxb.) Hallier f. 1839 (CCVN, 2:971)English name: Vietnamese name: Bồ namOther name: Convolvulus semidi- gynus Roxb. [1814, nom. Nud.] 1824. - Breweria semidigynus (Roxb.) Kuntze, 1891. - Breweria cordata Blume, 1826;