Green beans is a skin for green green soybeans. According to its cotyledon color, can be divided into green husk blue benevolence benevolence soybean two soybean and green Beijing Opera. Stems stout, densely gray long bristles. Petiole densely gray long bristles; Stipule small, lanceolate; Three ternate, apical lobule ling ovate, 7-13 cm long, 2 -- 6 cm wide, apex abruptly acuminate, base broadly cuneate or rounded, both sides have long white villous, lateral leaflets smaller, obliquely ovate; Rachis and the petiolule densely yellow long bristles.
Raceme altar, bracts and small bracts lanceolate, hairy; Calyx shape, and calyx teeth 5, lanceolate, below 1 tooth the longest, densely covered with long white hairs; Corolla small, white or pale purple, slightly long than calyx; Flag, apex slightly concave wing disc 2 ears, keel sickle; Stamens 10, two body; Ovary linear, coat. Pods banded oblong, slightly curved, sagging, yellow green, densely long green bristle, edible seeds.
