1、 Shape

Rehmannia glutinosa is a perennial herb, about 10-30cm high, covered with gray white long glandular hair and villous hair. The rhizome is fleshy, yellow when fresh, and the stem is purplish red

2、 Blade

The leaves of Rehmannia glutinosa are usually in a rosette shape at the base of the stem, which will strongly shrink upward into bracts, or gradually shrink and alternate on the stem. The whole leaf blade is oval to long oval. The top color is green, and the bottom will be a little purple or purplish red, with jagged edges or teeth

3、 Flower

Rehmannia glutinosa will be arranged into racemes at the top of the stem, or solitary in leaf axils and scattered to the stem. The apex is slightly concave or blunt. The inner color is yellow purple, the outer color is purplish red, and both sides are villous

4、 Fruit

Rehmannia glutinosa is a capsule, oval to long oval, about 1-1.5 cm long