A climbing cowpea vine.
Varieties: lātung, Vigna Sinensis (Leg), cowpea; layulāyu an lātung, Vigna sesquipedalis (Leg), soft cowpea or sitaw; tu''ol an lātung, Psophocarpus telragonolobus (Leg), asparagus bean. Grows mainly in upland fields, drained pond fields and along pond-field dikes.