Vigna unguiculata subsp. sesquipedalis (L.) Verdc.) is an annual climbing plant of the legume cowpea family, with a length of 2 to 4 meters. The pod is droopy, how much it expands when it is tender, and the tender pod is used as a vegetable. The variety can be roughly white (light green), green, red and striped in color according to the pod. The seeds are reniform, 8-12 mm long; Flower and fruit in summer