云牛膝，中药名。为苋科植物红褐粗毛牛膝AchyranthesasperaL.的根及根茎。分布于福建、台湾、湖南、云南等地。具有活血通经，利尿通淋，清热解毒之功效。用于腰膝疼痛，风湿痹痛，闭经，淋浊，疔疮痈肿，毒蛇蛟伤。
Yun-niu-xi, name of Chinese Medicinal Material. 云牛膝) refers to the root and rhizome of Achyranthes aspera L., a plant in the Amaranthaceae family, which is distributed in Fujian, Taiwan, Hunan, Yunnan, and other regions. It is known for its functions of promoting blood circulation, diuresis, clearing heat, and detoxification. It is used for treating lumbar and knee pain, rheumatic arthralgia, amenorrhea, urinary tract infections, carbuncles, furuncles, and snake bites.

功效作用 功能
Efficacy, function.

活血通经，利尿通淋，清热解毒。主治
Promoting blood circulation to remove blood stasis, diuresis to relieve stranguria, clearing heat and detoxifying. Mainly used for...

用于腰膝疼痛，风湿痹痛，闭经，淋浊，疔疮痈肿，毒蛇蛟伤。用法用量
Indications: Used for lumbar and knee pain, rheumatic arthralgia, amenorrhea, gonorrhea, carbuncle and furuncle swelling, and poisonous snake and scorpion bites. Dosage and Administration: [Please provide specific dosage and administration instructions.]

内服：煎汤，6-10g。注意事项
Internal administration: Decoction, 6-10g. Please pay attention to the following matters.

孕妇忌服。相关论述
Pregnant women should avoid taking it. Relevant discussions.

《台湾药用植物志》：“有健胃之功。”临床应用 相关配伍
"Taiwan Medicinal Plants Compendium": "Has the function of invigorating the stomach." Clinical applications and related compatibility.

1、治血滞经闭：鲜土牛膝50-100g，或加鲜马鞭草50g，水煎，用酒调服。2、治痢疾：土牛膝15g，地桃花根15g，车前草9g，青蒿9g。水煎，冲蜜糖服。（1-2方出自《全国重名易混淆中药鉴别手册》）加工炮制 采收加工

1. Treatment for blood stasis and amenorrhea: Fresh Achyranthes bidentata (50-100g), or combined with fresh Herba Cynomorii (50g), decocted in water and taken with wine.2. Treatment for dysentery: Achyranthes bidentata (15g), Radix Rehmanniae (15g), Plantago asiatica (9g), Artemisia annua (9g). Decoct in water, and take with honey. (The above prescriptions are from the "National Manual of Confusing and Easily Confused Chinese Medicinal Identification"). Processing and preparation: Harvest and process.

秋、冬季采挖，除去芦头及须根，洗净，晒干。药材鉴别 药材性状
In autumn and winter, harvest the herbs, remove the tops and root hairs, wash them clean, and dry them in the sun. Identify the herbs and describe their properties.

干燥根呈长圆柱形，略弯曲，多分枝，长达75cm，径约0.4-1.5cm。外表灰棕色，有显著的皱纹和横纹，不易折断，断面纤维性，棕黄色。无臭，味微甘。以肥大，油润，外表棕灰色者为佳。植物学信息 植物种属
The dried roots are long cylindrical in shape, slightly curved, often branched, up to 75cm in length and 0.4-1.5cm in diameter. They are grey-brown in appearance, with noticeable wrinkles and striations, not easily broken, and have a fibrous, yellow-brown cross-section. They have no odor and a slightly sweet taste. Roots that are plump, oily, and grey-brown on the surface are preferred. Botanical information about the plant species.

苋科植物红褐粗毛牛膝。形态特征
Amaranthaceae plant with red-brown coarse hairs, known as Achyranthes bidentata. Morphological characteristics.

红褐粗毛牛膝又名褐叶土牛膝、紫茎牛膝。多年生草本，高20-120厘米；根细长，直径3-5毫米，土黄色；茎四棱形，有柔毛，节部稍膨大，分枝对生。叶片纸质，宽卵状倒卵形或椭圆状矩圆形，长1.5-7厘米，宽0.4-4厘米，顶端圆钝，具突尖，基部楔形或圆形，全缘或波状缘，两面密生柔毛，或近无毛；叶柄长5-15毫米，密生柔毛或近无毛。穗状花序顶生，直立，长10-30厘米，花期后反折；总花梗具棱角，粗壮，坚硬，密生白色伏贴或开展柔毛；花长3-4毫米，疏生；苞片披针形，长3-4毫米，顶端长渐尖，小苞片刺状，长2.5-4.5毫米，坚硬，光亮，常带紫色，基部两侧各有1个薄膜质翅，长1.5-2毫米，全缘，全部贴生在刺部，但易于分离；花被片披针形，长3.5-5毫米，长渐尖，花后变硬且锐尖，具1脉；雄蕊长2.5-3.5毫米；退化雄蕊顶端截状或细圆齿状，有具分枝流苏状长缘毛。胞果卵形，长2.5-3毫米。种子卵形，不扁压，长约2毫米，棕色。花期6-8月，果期10月。分布区域
Red-brown coarse-haired Achyranthes, also known as brown-leafed Achyranthes and purple-stemmed Achyranthes, is a perennial herb, 20-120 centimeters tall. The roots are slender and long, with a diameter of 3-5 millimeters, and are a yellowish-brown color. The stems are four-angled, with soft hairs, slightly swollen at the nodes, and opposite branching. The leaves are papery, broadly ovate, inverted ovate, or elliptic-rectangular, 1.5-7 centimeters long, 0.4-4 centimeters wide, with a rounded blunt apex, acute tip, wedge-shaped or rounded base, entire or undulating margins, densely covered with soft hairs on both sides, or nearly hairless; leaf stalks are 5-15 millimeters long, densely covered with soft hairs or nearly hairless. The spike-like inflorescences are terminal, erect, 10-30 centimeters long, bending back after flowering; the peduncles are angular, stout, hard, densely covered with white appressed or spreading soft hairs; the flowers are 3-4 millimeters long, sparsely distributed; the bracts are lanceolate, 3-4 millimeters long, gradually pointed at the tip, the small bracts are spine-like, 2.5-4.5 millimeters long, hard, shiny, often purple, with a thin membranous wing on each side at the base, 1.5-2 millimeters long, entire, all appressed to the spine but easily separable; the tepals are lanceolate, 3.5-5 millimeters long, gradually pointed, becoming hard and sharp after flowering, with one vein; the stamens are 2.5-3.5 millimeters long; the degenerate stamens have a truncate or finely serrated tip, with branched fringe-like long marginal hairs. The capsule is ovoid, 2.5-3 millimeters long. The seeds are ovoid, not flattened, about 2 millimeters long, brown. Flowering occurs from June to August, and fruiting occurs in October. Distribution area.

分布于福建、台湾、湖南、云南等地。生长环境
Distributed in Fujian, Taiwan, Hunan, Yunnan and other regions. Growing environment.

生于路边。
Born by the roadside.