水流豆，中药名。为豆科植物水黄皮Pongamiapinnata(Linn.)Merr.的种子。分布于台湾、广东、海南、广西等地。具有祛风除湿，解毒杀虫之功效。用于风湿痹痛，癣疥，脓疮。
Shui-liu-dou, name of Chinese Medicinal Material. s the seed of the Leguminosae plant Pongamia pinnata (Linn.) Merr. It is distributed in Taiwan, Guangdong, Hainan, Guangxi, and other places. It has the functions of dispelling wind and dampness, detoxification, and insecticidal effects. It is used for rheumatic pain, scabies, and ulcers.

功效作用 功能
The efficacy and functions.

祛风除湿，解毒杀虫。主治
Dispelling wind and dampness, detoxifying and killing parasites. Mainly used for治疗.

用于风湿痹痛，癣疥，脓疮。用法用量
Used for rheumatic pain, scabies, and ulcers. Dosage and administration.

外用：适量，捣敷；或研末调敷。注意事项
External use: Apply an appropriate amount and apply it by pounding or grinding. Pay attention to the precautions.

能败血，虚人勿用，不宜内服。药理作用
Can cause sepsis, should not be used for weak individuals, and is not suitable for internal use. Pharmacological effects

抗结核作用。相关论述
Anti-tuberculosis effects. Relevant discussions.

《生草药性备要》：“治疥癞，烧灰亦可擦癣。”加工炮制 采收加工
"Compendium of the Properties of Medicinal Herbs": "For treating scabies, applying burnt ashes can also alleviate the symptoms of eczema." Processing and preparation: collection and processing.

秋季果实成熟时采收，打下种子，晒干。植物学信息 植物种属
Harvest the ripe fruits in autumn, extract the seeds, and dry them in the sun. This is the botanical information about the plant species.

豆科植物水黄皮。形态特征
Leguminous plant Sophora flavescens. Morphological characteristics

水黄皮又名：野豆、九重吹。乔木，高8-15米。嫩枝通常无毛，有时稍被微柔毛，老枝密生灰白色小皮孔。羽状复叶长20-25厘米；小叶2-3对，近革质，卵形，阔椭圆形至长椭圆形，长5-10厘米，宽4-8厘米，先端短渐尖或圆形，基部宽楔形、圆形或近截形；小叶柄长6-8毫米。总状花序腋生，长15-20厘米，通常2朵花簇生于花序总轴的节上；花梗长5-8毫米，在花萼下有卵形的小苞片2枚；花萼长约3毫米，萼齿不明显，外面略被锈色短柔毛，边缘尤密；花冠白色或粉红色，长12-14毫米，各瓣均具柄，旗瓣背面被丝毛，边缘内卷，龙骨瓣略弯曲。荚果长4-5厘米，宽1.5-2.5厘米，表面有不甚明显的小疣凸，顶端有微弯曲的短喙，不开裂，沿缝线处无隆起的边或翅，有种子1粒；种子肾形。花期5-6月，果期8-10月。分布区域
Water yellow bark, also known as wild bean or Jiuchongchui, is a tall tree, reaching 8-15 meters in height. The young branches are usually hairless, sometimes slightly covered with fine hairs, while the old branches are densely covered with gray-white small pores. The pinnate compound leaves are 20-25 centimeters long, with 2-3 pairs of nearly leathery leaflets that are ovate to elliptic-ovate, 5-10 centimeters long and 4-8 centimeters wide, with a short acuminate or rounded apex, and a wide cuneate, rounded, or nearly truncate base. The leaflets have a 6-8 millimeter long petiole. The axillary racemes are 15-20 centimeters long, usually with 2 flower clusters on the nodes of the raceme axis. The flower stalks are 5-8 millimeters long, with two ovate bracts below the calyx. The calyx is about 3 millimeters long, with inconspicuous teeth, slightly rusty short hairs on the outside, and a particularly dense margin. The corolla is white or pink, 12-14 millimeters long, with each petal having a stalk, the back of the standard petal covered with silky hairs, the margin inwardly rolled, and the keel petal slightly curved. The pod is 4-5 centimeters long and 1.5-2.5 centimeters wide, with slightly prominent small warts on the surface, a slightly curved short beak at the apex, does not split, and has no raised edges or wings along the suture line, with one seed that is kidney-shaped. It flowers from May to June and fruits from August to October. Its distribution area is...

分布于台湾、广东、海南、广西等地。生长环境
Distributed in Taiwan, Guangdong, Hainan, Guangxi and other regions. Growing environment.

生于溪边和河道两岸。
Born on the banks of streams and rivers.