vigna

Vigna is a genus of flowering plants in the legume family, Fabaceae, with a pantropical distribution. It includes some well-known cultivated species, including many types of beans. Some are former members of the genus Phaseolus. According to Hortus Third, Vigna differs from Phaseolus in biochemistry and pollen structure, and in details of the style and stipules.

Vigna is also commonly confused with the genus Dolichos, but the two differ in stigma structure.Vigna are herbs or occasionally subshrubs. ...