This experiment aims at providing a theoretic basis for the culture and breeding of Vigna angularis .The results obtained showed that:A multicellular archesporium is common. The archesporial cells cut off primary parietal cells and sporogenous cells,of which only one cell is functional. The chalazal megaspore in linear tetrad is functional. The development of embryo nary sac is of the polygonum type. Two pollar nuclei fuse into the secondary nucle...