1, the ground for the Xuanzeng family perennial herbs, because of its underground tuberous roots for the yellowish-white color and the name of the ground for the root of one of the traditional Chinese medicines, according to the method of concoctions in the herbs are divided into: fresh ground for the rhubarb, dry ground for the rhubarb and the cooked ground for the rhubarb, and at the same time its medicinal properties and efficacy has a big difference, according to the "Chinese Materia Medica" effect According to the classification of the Chinese Materia Medica, fresh dihuang is a heat-clearing and blood-cooling medicine; cooked dihuang is a tonic medicine.

2. The root of dihuang is fresh dihuang.

3, yellow root, alias: four-stamen triangular petal flower, dog bone wood, white dog bone, black root seeds. The root of Nanshanhua, a plant of the Rubiaceae family. The roots are used as medicine. Spring and fall digging, washing and drying. Functions and Indications: Cooling blood, stopping bleeding, inducing dampness and relieving yellowness. Used for leukemia, aplastic anemia, bleeding gums, hepatitis, urinary tract infection.

4, land yellow root is not a local production of a kind of rhubarb?