Leguminosae Vigna sesquipedalis (L.) Fruwirth.
Source: Magness et al. 1971
This bean is closely related to southern pea, which see. The pods are greatly elongated, up to 3 feet, fleshy and brittle, and can be cooked as a snap bean. It is little grown as a vegetable in the United States, since it sets few pods. The plant is used somewhat for forage. The plant is a trailing vine, similar in all respects to southern pea except for longer and more tender pods. It is grown mainly as a curiosity.