Wisteria is a deciduous vine, which is easily confused with wisteria. Wisteria is slightly lighter in color than wisteria. Woody stems is thick, the dry skin is grayish white, and the vines are left-handed and grow counterclockwise, so the surface has spiral grooves and obvious lenticels. Winter buds cling to the lateral branches, and the buds are covered with dark brown scales with white hairs on them.
leaf
Odd-pinnate compound leaves alternate, 9 leaflets to 1 1, stipules caducous, entire, oblong, 5-1cm long.
flower
Flowers are composed of long racemes, which are terminal and drooping at the top of new branches or leaf axils, with a length of 15 cm to 30 cm, and 50 to 100 butterfly florets are borne on each inflorescence; Calyx bell-shaped, short and 5-toothed, with longer lower teeth; Corolla protruding from calyx, inflorescence drooping, butterfly-shaped, purple and fragrant. The flag flap is sickle-shaped, with ears at the base, and the keel flap is blunt; Stamens 10, dimorphic (9+1); Ovary stipitate, many ovules, style inflexed, glabrous; The pod is flat, knife-shaped, stipe-shaped, and the surface is densely covered with silver-gray short hairs. The pod contains 1 ~ 3 seeds, beaded and 2-valved.