白茅恨∶味甘，性凉，中空有节，最善透发脏腑郁热，托痘疹之毒外出；又善利小便淋涩作疼、因热小
便短少、腹胀身肿；又能入肺清热以宁嗽定喘；为其味甘，且鲜者嚼之多液，故能入胃滋阴以生津止渴，并治
肺胃有热、咳血、吐血、衄血、小便下血，然必用鲜者其效方着。春前秋后剖用之味甘，至生苗盛茂时，味即
不甘，用之亦有效验，远胜干者。
茅针∶即茅芽，初发犹未出土，形如巨针者，其性与茅根同，而稍有破血之力。凡疮溃脓未破者，将茅
针煮服其疮即破，用一针破一孔，两针破两孔。
【附案】一人年近五旬，受温疹之毒传染，痧疹遍身，表里壮热，心中烦躁不安，证实脉虚，六部不起，
屡服清解之药无效，其清解之药稍重，大便即溏。俾用鲜茅根六两，煮汤一大碗顿服之，病愈强半，又服一次
全愈。
一西医得温病，头疼壮热，心中烦躁，自服西药退热之品，服后热见退，旋又反复。其脉似有力，惟在
浮分、中分，俾用鲜茅根四两、滑石一两，煎三四沸，取汤服之，周身得微汗，一剂而诸病皆愈。
一妇人年近四旬，因阴虚发热，渐觉小便不利，积成水肿，服一切通利小便之药皆无效。其脉数近六至，
重按似有力，问其心中常觉烦躁，知其阴虚作热，又兼有实热，以致小便不利而成水肿也。俾用鲜茅根半斤，
煎汤两大碗，以之当茶徐徐温饮之，使药力昼夜相继，连服五日，热退便利，肿遂尽消。
Baimaogen (Rhizoma Imperatae): It has a sweet taste and cool nature. Its stem is hollow with nodes, making it most effective in venting stagnant heat from the Zang-Fu organs and expelling the toxicity of smallpox/rash outward. It is also effective in treating painful dysuria due to heat, oliguria due to heat, abdominal distension, and generalized edema. It can enter the Lung to clear heat, thereby calming cough and relieving asthma. Due to its sweet taste and the fact that fresh rhizomes yield much juice when chewed, it can enter the Stomach to nourish Yin, generate fluids, and relieve thirst. It treats hemoptysis, hematemesis, epistaxis, and hematuria caused by heat in the Lung and Stomach; however, fresh material must be used for significant efficacy. Baimaogen dug up before spring or after autumn has a sweet taste. When the plant is lush and growing vigorously, the taste becomes less sweet. Although it remains effective, it is far superior to dried material.
Maozhen (Emerging Shoot of Imperata): This refers to the shoot of the imperata grass. When first sprouting but not yet emerging from the soil, shaped like a large needle, its nature is the same as Baimaogen but possesses slightly stronger blood-breaking properties. For any ulcerated sore with pus that has not yet ruptured, boiling and consuming Maozhen will cause the sore to rupture: one needle breaks one opening, two needles break two openings.
[Attached Cases]
Case 1: A man nearing fifty years of age contracted the toxin of warm rash. His body was covered with macules and papules, presenting with intense heat in both the exterior and interior, accompanied by restlessness and irritability. The syndrome appeared excess, yet the pulse was deficient and sunken at all six positions. Repeated administration of clearing and resolving herbs proved ineffective; if the dosage of these clearing herbs was slightly heavy, it caused loose stools. He was prescribed six taels of fresh Baimaogen, boiled into a large bowl of decoction to be taken in one dose. His condition improved by more than half, and after a second dose, he recovered completely.
Case 2: A Western physician suffered from warm disease, characterized by headache, intense fever, and internal restlessness. He self-administered Western antipyretics. After ingestion, the fever temporarily subsided but soon recurred. His pulse seemed forceful but was only palpable in the superficial (Fu) and middle (Zhong) layers. He was prescribed four taels of fresh Baimaogen and one tael of Talcum (Huashi), boiled for three to four boils. The decoction was consumed, resulting in slight sweating over the whole body. One dose cured all symptoms.
Case 3: A woman nearing forty years of age suffered from deficiency-heat due to Yin deficiency. She gradually experienced difficulty in urination, which accumulated into edema. All diuretic medications administered were ineffective. Her pulse was rapid, approaching six beats per breath, and seemed forceful upon deep pressure. Upon inquiry, she reported frequent internal irritability. It was determined that her condition involved heat generated by Yin deficiency combined with excess heat, leading to urinary difficulty and subsequent edema. She was instructed to consume half a jin of fresh Baimaogen, boiled into two large bowls of decoction, drinking it slowly while warm as tea, ensuring continuous medicinal effect day and night. After five consecutive days, the heat subsided, urination became smooth, and the edema completely resolved.