Commelina belongs to Commelina, with a plant height of about 30 ~ 60 cm, long elliptic-lanceolate leaves, stalks at the base, dark green on the upper surface, dark purple on the lower surface, thick and slightly leathery. Cooling blood, moistening lung and relieving depression; Treat traumatic injury, hematemesis, blood stasis, pneumonia, cough, etc. Usage: The whole herb is used as medicine, and stewed with Chuanxiong and lean meat, which can treat traumatic blood stasis or hematemesis, cough and traumatic swelling and pain. This fruit juice is allergic to some skin, which may cause tingling and itching, and even cause a small rash. Pay more attention to usage and dosage when using it.