1、 Different plant types

Rehmannia glutinosa is an annual or biennial herb with a relatively low plant type and a height of about 60-120 cm. The stem is generally solitary, covered with gray white pubescence, and sometimes the stem is relatively smooth

Marshmallow is a biennial upright herb, which is different from the former in terms of root. Its plant type is relatively high, up to about 2 meters high, and spiny hairs are densely distributed on the stem

2、 Different leaves

The leaf shape of Rehmannia glutinosa is oval or long oval, with a length of about 5-15 cm. There are short sharp round teeth on the edge. There are no lobes on the leaf, and the petiole is relatively short, or even no petiole

The shape of the leaves of marshmallow is almost central, with a diameter of about 6-16 cm. It is palmately shaped with 5-7 shallow cracks. The shape of a single lobe is triangular or circular, and the petiole is relatively long, about 5-15 cm long

3、 Different flowers

The flowers of Rehmannia glutinosa are bell shaped, arranged very closely and neatly, with purple color and spots inside. A single flower is relatively small, with only one layer of petals

The flowers of marshmallow are relatively large and arranged in racemes. There are many colors, including purple, white, pink, red and so on