泻火消瘀、凉血止哕。
甘寒。入手少阴心、足太阴阳明。（脾胃。）除伏热。消瘀血。利小便。解酒毒。治吐衄
诸血
。（心肝火旺、逼血上行、则吐血、肺火盛则衄血、茅根、甘和血、寒凉血、引火下降、故
治之、扑损瘀血、捣汁服、名茅花汤、亦治鼻衄产淋。）血闭寒热。（血瘀则闭、闭则寒热作
矣。）淋沥崩中。（血热则崩。）伤寒哕逆。（即呃逆、说文曰∶哕、气牾也。许慎说文解字
、周弼说文本原。）肺热喘急，内热烦渴。黄胆水肿。（清火行水、时珍曰∶良药也、世人以
微而忽之、惟事苦寒之药、伤冲和之气、乌足知此哉。）针能溃脓。（酒蒸服、一针溃一孔、
二针溃二孔。）花能止血。吐血因于虚寒者。非所宜也。
通、祛风湿。
气寒善行。味苦性燥。入脾胃。除湿热。兼入膀胱小肠。行水道。通关节。利九窍。为
诸黄
风痹之要药。（一味白鲜皮汤、治产后风、时珍曰∶世医止施之疮科、浅矣。）兼治风疮疥癣
。女子阴中肿痛。（湿热乘虚、客肾与膀胱所致。）下部虚寒。虽有湿证。勿可饵也。近道处
处有之。以四川所产为良。江宁府、滁州、润州所产。俱次之。根黄白而心实。取皮用。（
山人采嫩苗、为菜茹。）恶桑螵蛸、桔梗、茯苓、萆 。（鼠 已破、出脓血、白鲜煮汁服、
效。）
Clearing fire, resolving stasis, cooling blood, and stopping hiccups.
Sweet and cold. Enters the Hand-Shaoyin Heart meridian and the Foot-Taiyin Spleen and Foot-Yangming Stomach meridians (Spleen and Stomach). Eliminates latent heat, resolves blood stasis, promotes urination, detoxifies alcohol, and treats hematemesis and epistaxis along with various bleeding disorders. (When Heart and Liver fire are hyperactive, forcing blood upward, hematemesis occurs; when Lung fire is excessive, epistaxis occurs. Mugwort Rhizome [Baimaogen] sweetly harmonizes blood and cools it with its cold nature, guiding fire downward, thus treating these conditions. For traumatic bruising and blood stasis, crushing the juice for oral administration is named "Maohua Tang" [Mugwort Flower Decoction], which also treats epistaxis and postpartum strangury.] Blood obstruction with chills and fever. (Blood stasis causes obstruction; obstruction leads to the onset of chills and fever.) Strangury and metrorrhagia. (Blood heat causes metrorrhagia.) Shaoyin disease with hiccups. (This refers to hiccup. The *Shuowen Jiezi* states: "Hui" means qi counterflow. Xu Shen's *Shuowen Jiezi*, Zhou Bi's *Shuowen Benyuan*.) Lung heat with panting and urgency, internal heat with vexation and thirst. Jaundice and edema. (Clearing fire and promoting water metabolism. Li Shizhen said: "It is a good medicine. People neglect it because it is mild, only using bitter-cold drugs that damage the harmonious qi. How can they know this?") Needles can disperse pus. (Taken after steaming in wine; one needle disperses one abscess, two needles disperse two abscesses.) Flowers can stop bleeding. It is not suitable for hematemesis caused by deficiency-cold.
Unblocking, dispelling wind-dampness.
Cold in nature, agile in movement. Bitter in taste, dry in property. Enters the Spleen and Stomach. Removes damp-heat. Also enters the Bladder and Small Intestine. Promotes water pathways, unblocks joints, benefits the nine orifices. It is an essential herb for all types of jaundice and wind-bi syndrome. (A single-herb Bai Xian Pi Tang [White Bark Decoction] treats postpartum wind. Li Shizhen said: "Contemporary physicians only apply it to dermatology, which is superficial.") It also treats wind sores, scabies, and tinea. Swelling and pain in the female vagina. (Damp-heat takes advantage of deficiency to lodge in the Kidney and Bladder.) Lower body deficiency-cold. Even if there are dampness patterns, do not administer it. It is found everywhere in nearby regions. The produce from Sichuan is considered superior. Those from Jiangning Prefecture, Chuzhou, and Runzhou are inferior. The root is yellowish-white with a solid core; use the bark. (Mountain people harvest tender shoots as vegetables.) Incompatible with Sang Piao Xiao (Mantis Egg Case), Jie Geng (Platycodon Root), Fu Ling (Poria), and Bi Xie (Dioscorea Hypoglauca Rhizome). (If a rat bite has ruptured, releasing pus and blood, boiling Bai Xian Pi [Dictamni Cortex] into juice and taking it is effective.)