fast-growing East Asian vine having hairy trifoliate leaves and racemes of purple flowers followed by long many-seed hairy pods and tuberous starchy roots;

• 生长很快的东亚藤蔓植物，有多毛的三叶叶子，开紫色花的总状花序，结多种子的长毛豆荚，块根富含淀粉；