羊角拗，中药名。为夹竹桃科植物羊角拗Strophanthusdivaricatus(Lour.)Hook.etArn.的根或茎叶。分布于福建、广东、海南、广西、贵州、云南等地。具有祛风湿，通经络，解疮毒，杀虫之功效。常用于风湿痹痛，小儿麻痹后遗症，跌打损伤，痈疮，疥癣。
Yang-jiao-ao, name of Chinese Medicinal Material. The root or stem and leaves of the plant Strophanthus divaricatus (Lour.) Hook. et Arn. of the Apocynaceae family. It is distributed in Fujian, Guangdong, Hainan, Guangxi, Guizhou, Yunnan, and other places. It has the functions of dispelling wind and dampness, promoting blood circulation, resolving sores and toxins, and killing insects. It is commonly used for rheumatic pain, sequelae of infantile paralysis, bruises, carbuncles, and scabies.

功效作用 功能
Efficacy, function.

祛风湿，通经络，解疮毒，杀虫。主治
Dispelling wind and dampness, promoting the circulation of meridians, resolving toxins, and killing parasites. This prescription is mainly used for treating...

风湿痹痛，小儿麻痹后遗症，跌打损伤，痈疮，疥癣。用法用量
Rheumatic pain, sequelae of infantile paralysis, bruises, carbuncles, and scabies. Dosage and administration.

外用：适量，煎水洗；或捣敷；或研末调敷。注意事项
External use: Apply an appropriate amount, wash with decoction; or apply as a poultice; or mix into a paste for application. Please pay attention to the following precautions.

本品毒性较大，多作外用，一般不作内服。生品内服极易中毒，往往先出现头痛、头晕、恶心、呕吐、腹痛、腹泻、烦躁、谵语，其后四肢冰冷出汗、脸色苍白、脉搏不规则、瞳孔散大、对光反应不敏感，继而出现痉挛、昏迷、心跳停止而死亡。1.《本草求原》：“有毒，能杀人，不可入口。”2.《岭南采药录》：“有大毒，不入服剂。”药理作用
This medicine is highly toxic and is mostly used externally, generally not for internal consumption. Ingesting the raw form of this medicine can easily lead to poisoning, often manifesting first as headache, dizziness, nausea, vomiting, abdominal pain, diarrhea, restlessness, and delirium. Subsequently, symptoms may progress to cold limbs with sweating, pale complexion, irregular pulse, dilated pupils, insensitivity to light, followed by convulsions, coma, cessation of heartbeat, and death. 1. "Ben Cao Qiu Yuan": "Toxic, lethal, do not ingest." 2. "Lingnan Cai Yao Lu": "Highly toxic, not for oral administration." Pharmacological actions.

1、对心脏的作用：正性肌力作用；减慢心率；减慢传导；对冠脉及心肌代谢的影响。2、子宫兴奋作用。3、镇静作用。4、利尿作用。5、体内过程。6、毒性：羊角拗叶、根及种子均有毒。相关论述

1. Effects on the heart: positive inotropic effect; slowing of heart rate; slowing of conduction; effects on coronary arteries and myocardial metabolism. 2. Uterine excitatory effect. 3. Sedative effect. 4. Diuretic effect. 5. Processes in the body. 6. Toxicity: The leaves, roots, and seeds of Xanthium strumarium are all toxic. Related discussions.

《岭南采药录》：“羊角藤，蔓生。其叶似柳叶，结荚如羊角。”临床应用 临床应用
"Lingnan Materia Medica": "Goat's Horn Vine, creeping vine. Its leaves resemble willow leaves, and its pods are shaped like goat horns." Clinical application.

心力衰竭。相关配伍
Heart failure. Relevant compatibility.

1、治乳痈初期：羊角拗鲜叶、红糖同捣烂，烤热外敷。（《福建中草药》）2、治骨折：羊角拗根、辣椒根、柳树根各等量，研末，韭菜头捣水拌匀，温敷损伤或骨折处（要先复位，夹板固定）。（《福建药物志》）附注

1. Treatment of early stage of breast abscess: Twist fresh leaves of sheep horn with red sugar, mash them together, and apply the mixture externally after heating. (From "Fujian Herbal Medicine")2. Treatment of bone fracture: Equal amounts of roots of sheep horn, chili pepper, and willow, grind into powder, mix with mashed Chinese chives and water, and apply warm compress to the injured or fractured area (reduction should be done first, followed by splint fixation). (From "Fujian Materia Medica") Note:

羊角拗药外用治跌打损伤、疥癣。加工炮制 采收加工
Sheep horn twisted medicine is used externally to treat bruises, injuries, and scabies. Processing method: collection and processing.

全年均可采，根，洗净，切片晒干；茎、叶，晒干或鲜用。炮制方法
The roots can be harvested all year round, washed, sliced, and dried in the sun; the stems and leaves can be dried in the sun or used fresh. Processing method.

拣除杂质，整理洁净。药材鉴别 药材性状
Remove impurities and clean up. Identification of medicinal materials. Characteristics of medicinal materials.

茎枝圆柱形，略弯曲，多截成3O-60cm的长段；表面棕褐色，有明显的纵沟及纵皱纹，粗枝皮孔灰白色，横向凸起，嫩枝密布灰白色小圆点皮孔；质硬脆，断面黄绿色，木质，中央可见髓部。叶对生，皱缩，展平后呈椭圆状长圆形，长3-8cm，宽2.5-3.5cm，全缘，中脉于下面突起。气微，味苦。有大毒。以茎枝幼嫩、叶多者为佳。植物学信息 植物种属
The stems are cylindrical, slightly curved, often cut into segments of 30-60cm in length; the surface is brownish, with obvious longitudinal grooves and wrinkles, the bark of the thick branches has gray-white pores that protrude horizontally, and the young branches are densely covered with small gray-white circular pores; the texture is hard and brittle, the cross-section is yellow-green, woody, and the pith can be seen in the center. The leaves are opposite, wrinkled, elliptic-oblong when flattened, 3-8cm long, 2.5-3.5cm wide, with entire margins, and the midrib is prominent on the underside. It has a slight odor and a bitter taste. It is highly toxic. The best parts are the tender stems and leaves. Botanical information: Plant species.

夹竹桃科羊角拗属羊角拗。形态特征
Nerium oleander, a member of the Apocynaceae family. Characteristics include:

灌木，高达2米，全株无毛，上部枝条蔓延，小枝圆柱形，棕褐色或暗紫色，密被灰白色圆形的皮孔。叶薄纸质，椭圆状长圆形或椭圆形，长3-10厘米，宽1.5-5厘米，顶端短渐尖或急尖，基部楔形，边缘全缘或有时略带微波状，叶面深绿色，叶背浅绿色，两面无毛；中脉在叶面扁平或凹陷，在叶背略凸起，侧脉通常每边6条，斜曲上升，叶缘前网结；叶柄短，长5毫米。聚伞花序顶生，通常着花3朵，无毛；总花梗长0.5-1.5厘米；花梗长0.5-1厘米；苞片和小苞片线状披针形，长5-10毫米；花黄色；花萼筒长5毫米，萼片披针形，长8-9毫米，基部宽2毫米，顶端长渐尖，绿色或黄绿色，内面基部有腺体；花冠漏斗状，花冠筒淡黄色，长1.2-1.5厘米，下部圆筒状，上部渐扩大呈钟状，内面被疏短柔毛，花冠裂片黄色外弯，基部卵状披针形，顶端延长成一长尾带状，长达10厘米，基部宽0.4-0.5厘米，裂片内面具由10枚舌状鳞片组成的副花冠，高出花冠喉部，白黄色，鳞片每2枚基部合生，生于花冠裂片之间，顶部截形或微凹，长3毫米，宽1毫米；雄蕊内藏，着生在冠檐基部，花丝延长至花冠筒上呈肋状凸起，被短柔毛，花药箭头形，基部具耳，药隔顶部渐尖成一尾状体，不伸出花冠喉部，各药相连，腹部粘于柱头上；子房半下位，由2枚离生心皮组成，无毛，花柱圆柱状，柱头棍棒状，顶端浅裂，每心皮有胚珠多颗；无花盘。蓇葖广叉开，木质，椭圆状长圆形，顶端渐尖，基部膨大，长10-15厘米，直径2-3.5厘米，外果皮绿色，干时黑色，具纵条纹；种子纺锤形、扁平，长1.5-2厘米，宽3-5毫米，中部略宽，上部渐狭而延长成喙，喙长2厘米，轮生着白色绢质种毛；种毛具光泽，长2.5-3厘米。花期3-7月，果期6月-翌年2月。分布区域
Shrub, up to 2 meters tall, entire plant glabrous, upper branches sprawling, twigs cylindrical, brown or dark purple, densely covered with gray-white circular lenticels. Leaves thin and papery, elliptic-oblong or elliptic, 3-10 cm long, 1.5-5 cm wide, apex shortly acuminate or acute, base cuneate, margin entire or sometimes slightly undulate, adaxial surface dark green, abaxial surface light green, both surfaces glabrous; midvein flat or sunken on the adaxial surface, slightly raised on the abaxial surface, lateral veins usually 6 on each side, obliquely ascending, reticulate venation present near the margin; petiole short, 5 mm long. Umbel inflorescence terminal, usually with 3 flowers, glabrous; peduncle 0.5-1.5 cm long; pedicel 0.5-1 cm long; bracts and bracteoles linear-lanceolate, 5-10 mm long; flowers yellow; calyx tube 5 mm long, sepals lanceolate, 8-9 mm long, 2 mm wide at the base, apex long acuminate, green or yellowish-green, glands present at the base on the inner surface; corolla funnel-shaped, pale yellow, 1.2-1.5 cm long, cylindrical at the base, gradually expanding into a bell shape at the top, sparsely short-hairy on the inner surface, corolla lobes yellow, outwardly curved, ovate-lanceolate at the base, elongated into a long tail-like appendage at the apex, up to 10 cm long, 0.4-0.5 cm wide at the base, inner surface of the lobes with a secondary corolla composed of 10 tongue-shaped scales, protruding above the corolla throat, white-yellow, scales basally connate in pairs, located between the corolla lobes, truncate or slightly concave at the top, 3 mm long, 1 mm wide; stamens included, attached at the base of the corolla throat, filaments elongated along the corolla tube forming rib-like projections, short-hairy, anthers arrowhead-shaped, with ears at the base, connective gradually tapering into a tail-like structure at the apex, not extending beyond the corolla throat, anthers connivent, adhering to the stigma; ovary semi-inferior, composed of 2 distinct carpels, glabrous, style cylindrical, stigma club-shaped, shallowly lobed at the apex, each carpel with multiple ovules; no disc present. Fruit a broadly forked capsule, woody, elliptic-oblong, gradually pointed at the apex, swollen at the base, 10-15 cm long, 2-3.5 cm in diameter, green when fresh, turning black when dry, longitudinally striped; seeds spindle-shaped, flattened, 1.5-2 cm long, 3-5 mm wide, slightly wider in the middle, tapering and elongating into a beak at the upper end, beak 2 cm long, covered with white silky hairs in a whorl; silky hairs glossy, 2.5-3 cm long. Flowering period from March to July, fruiting from June to February of the following year. Distribution area.

分布福建、广东、海南、广西、贵州、云南等地。生长环境
Distributed in Fujian, Guangdong, Hainan, Guangxi, Guizhou, Yunnan, and other regions. Growing environment.

生于山坡或丛林中。
Born on a hillside or in the jungle.