Bletilla hyacinthina, also known as white and, is the dried tuber of Bletilla hyacinthina, family Orchidaceae. It is slightly cold in nature, bitter, sweet and astringent in taste, and belongs to lung, liver and stomach meridians. Function of astringent haemostasis, swelling and muscle, kill insects and astringent sores, the main treatment of haemoptysis, vomiting blood, traumatic bleeding, canker sores and poisons, chapped hands and feet, carbuncle and other diseases. The Compendium of Materia Medica states that Bletilla hyacinthina is an important medicine for "stopping bleeding by entering the lungs".

　　Song Dynasty Hong Mai "Yi Jian Zhi" cloud, Taizhou (now Taizhou City, Zhejiang Province), there is a large prisoner, seven times to commit a capital offence, many times by the torture, lungs are damaged, resulting in vomiting blood. He insisted on using rice soup to serve water hyacinth, and was cured. Before his execution, the prisoner told his cellmates who usually took care of him about this secret recipe. Later, after he was executed, the executioner "cut open his chest and saw dozens of acupuncture points between the lungs, all filled with water hyacinth, and the colour remained unchanged." It can be seen that the use of water hyacinth to treat lung disease and vomiting blood is really effective. The following is a list of several common prescriptions for treating diseases with Bletilla hyacinthina:

　　Treatment of cough, haemoptysis formula Bletilla hyacinthina, cane sugar made into powder, 15 grams each time, 2 times a day, warm water to serve. Can replenish the lung to stop bleeding, can cure long-term cough, impotence and haemoptysis.

　　Treatment of upper gastrointestinal haemorrhage Bletilla hyacinthina, raw rhubarb, equal amount, total research for fine powder. Each oral 5 grams, plus Yunnan Baiyao 0.5 grams, 3 times a day. The haemostatic effect is better. This formula can also treat tuberculosis haemoptysis.

　　Treatment of pulmonary tuberculosis Bletilla, lily, Coix lacryma, almonds 150 grams each, 30 grams of Sichuan shellfish mother. The above medicines are finely ground, 10 grams each time orally, 3 times a day. Take the medicine for 21 days for a course of treatment, take 3 courses of treatment can achieve better results.

　　Treatment of nosebleed more than square Bletilla hyacinth appropriate amount of research powder, with vinegar to mix the end of Bletilla hyacinth on the bridge of the nose at the low place (called "root"), and take Bletilla hyacinth 3 grams of end with warm water to rinse service.

　　Treatment of dental caries pain formula Bletilla, rhubarb, Ampelopsis japonica 30 grams each, 10 grams of andrographis paniculata, total research for the fine powder, the bottle is equipped with use. Each time to take 10 grams of medicine, with the wine into a paste, the affected side of the face on the face of the ground position and cheek car points and other parts, covered with a layer of film, and then gauze, fixed with adhesive tape, 24 hours after the removal of the next. If the effect is quick, it can be healed in 1 time, if it is slow, it can be healed in several times.

　　Treatment of various traumatic injuries treatment of knife and axe damage to muscle bleeding more than the person, the available hyacinth research finely mixed; treatment of bone fracture, the available wine hyacinth 6 grams of the end of oral; the treatment of scalding fire burns, the available sesame oil hyacinth end of the compress; treatment of chapped hands and feet, the available cool water hyacinth end of the plug. Do not commit water during treatment.

　　Treatment of boils and canker sores Bletilla hyacinthina, wood hibiscus leaves, rhubarb, cypress, five times the amount of each, together with the research for fine powder, with wine, vinegar and so on, mix well, apply or paste on the affected area. All boils and sores can be treated with this method.