At least one botanist has a#39;solveda#39; the problem by uniting Vigna and Phaseolus: Gagnepain, in: Lecomte, Fl. G6n. PIndo-Chine 2: p. ... He recognized eight sections: Sigmoidotropis, Ceratotropis, Lasiospron Benth., Macroptilium Benth. ... By and large, however, the genus Phaseolus retained much of the defined description until Ohwi, in his Flora of Japan, established Azukia for the a#39;munga#39; group.