1、 Leaf difference
Sweet bean leaflets are oblong or ovoid, about 3 to 5 cm long and about 1 to 2 cm wide, entire p>
The leaves of lotus beans have 4 to 6 leaflets, which are heart-shaped. The lower edge of the leaves has fine teeth. The leaflets are oval, 2 to 5 cm long and 1 to 2.5 cm wide. They are full-bodied p>
2、 Flower difference
Sweet bean flowers are solitary or 1 to 3 arranged in racemose axillary, and the Corolla is white or purplish red p>
Dutch bean flowers are white or purplish red, solitary or 1 to 3 arranged in racemes p>
3、 Fruit difference
The pod of sweet bean is long and oval, about 5 to 10 cm long. There is a paper lining in the pod, and the seeds are round, usually 2 to 10, green p>
The pods of Dutch beans are long oval or oblate, and the seeds are round, cylindrical, oval or oblate. Each pod has 2 to 10, mostly green p>