While the name of white epiphyllum and black epiphyllum are similar, they are actually two things. There are two kinds of white epiphyllum, one is the tuber of the Tennessee plant, one is the tuber of the yellow flower of the mullein plant, the former is called Yubai epiphyllum, the latter is also known as Guanbai epiphyllum. The black appendage is an alias of the epiphyllum, which is the root of the aconite of the buttercup plant, family Ranunculaceae.

The two drugs are both warm and poisonous products, but their functions and treatments are quite different. The black aconite is pungent, hot and dry, for the pure yang product, to return to the yang fire dispersal of cold pain in the long, not only on the heart to help the yang to pass the pulse, but also under the complementary yuanyang to benefit from the fire. White aconite is bitter pungent and warm, function of dampness and phlegm, wind antispasmodic, and rows of scattered and ascending, good attraction of the drug potential upward head and face, to warm and dry cold and damp antispasmodic long. Good for stubborn phlegm cough, phlegm and vertigo, epilepsy and tetanus. It can also be applied externally to dissipate lumps and swellings, and treat carbuncle, phlegm and core swelling and pain. Among them, Yu from the appendage favor expectoration of wind and phlegm antispasmodic, tetanus, silent convulsions, stroke phlegm congestion, crooked mouth and eyes and hemiplegia used; and Guan Bai appendage and appendage for the same family of plants, long for the expulsion of cold and dampness, pain, good treatment of wind-cold-damp paralysis, migraine and headache and other evidence.