Vigna Unguiculata subsp. sesquipedalis
Sitaw, Juro Kusasagemae, Chang Dou, Tao Fug Yao, Dau Dua,
A member of the Vigna genus, whose members also include adzuki beans (V. Angularis), mung bean (V. Radiata) and black gram (V. Mungo), the long bean is a subspeci...