Annual twining herbs. Stem weak, sparsely yellow bristles. Leaves pinnately ternate, stipules small, ovate-lanceolate; leaflets thinly papery, ovate, ovate-elliptic or ovate-lanceolate, 1-5 centimeters long, 1-2.5 centimeters wide, apex pointed or obtusely rounded, base rounded, entire, hirsute on both surfaces. Racemes axillary, flowers pale purplish red, 4-5 mm long; calyx campanulate, calyx teeth triangular-lanceolate; corolla butterfly-shaped, flag petals suborbicular, winged petals crooked-obovate, keel petals smaller. Pods narrowly moment-rounded, slightly curved, slightly flattened on both sides, 15-23 mm long, 4-5 mm wide, densely yellow-brown hirsute; seeds ellipsoid, black. Fl. July, fr. Aug. ---- See Baidu Encyclopedia.
Some users said that peanut fields can be used "Tiger Wei" control, but not to the root, only control, ------- I have not used.