水线草，中药名。为茜草科植物水线草Oldenlandia corymbosa L.的全草。具有清热解毒，消疸退黄的功效。疟疾，肠痛，肿毒，烫伤。
Shui-xian-cao, name of Chinese Medicinal Material. Oldenlandia corymbosa L.) is the whole plant of the Rubiaceae plant Oldenlandia corymbosa L. It has the functions of clearing heat, detoxifying, and reducing jaundice. It is used for treating malaria, abdominal pain, swelling, and burns.

功效作用 功能
Efficacy and Functions

清热解毒，消疸退黄。主治
Clearing heat, detoxifying, resolving jaundice, and reducing yellowing. Mainly used for治疗。

疟疾，肠痛，肿毒，烫伤。用法用量
Malaria, abdominal pain, swelling and toxicity, burns. Dosage and administration.

内服：煎汤，15-30g，外用：适量，煎水洗。临床应用 相关配伍
Internal use: Decoction, 15-30g. External use: Appropriate amount, decoct in water for washing. Clinical application and relevant compatibility.

1、疟疾：水线草、常山、马鞭草各6g。混合煎服。（《中国药物志》）2、烫伤：永线草煎洗。（《中国药物志》）3、湿热黄疸，急性肝炎：水线草15g，地星宿15g，田基黄15g，天青地白草10g，马鞭草10g，茵陈蒿15g，鬼针草15g，苦草10g，水煎服。加工炮制 采收加工

1. Malaria: 6g of Water Plantain, 6g of Chinese Gentian, and 6g of Horsewhip Weed. Mix and decoct for oral administration. (Compendium of Materia Medica)2. Burns: Decoct and wash with Houttuynia cordata. (Compendium of Materia Medica)3. Damp-heat jaundice, acute hepatitis: 15g of Water Plantain, 15g of Herba Hedyotis Diffusae, 15g of Radix Thalictri, 10g of Herba Oldenlandiae, 10g of Horsewhip Weed, 15g of Herba Artemisiae Scopariae, 15g of Herba Siegesbeckiae, 10g of Radix Gentianae, decoct in water for oral administration. Process and prepare according to specific methods.

夏、秋采收，鲜用或晒干。植物学信息 植物种属
Harvest in summer or autumn, use fresh or sun-dried. Botanical information: Plant species.

茜草科植物水线草。形态特征
Water Smartweed, a plant in the Polygonaceae family. Morphological characteristics.

一年生披散纤弱草本，高15-50cm，秃净或被粉状微毛。茎多分枝，无毛或疏被细柔毛。叶对生，无柄或具短柄；叶片线状披针形，或线形，长1.5-3m，宽1.5-3.5mm，全缘；托叶小或无，膜质，合生成鞘状，长1-1.5mm，截头，顶端具短刺毛。花序腋生，多为2-5朵排列成伞房花序，稀有单生；花序柄线状，长0.6-2cm；花萼广卵圆形，长约2.5mm，先端4齿裂，外被细柔毛；花冠漏斗状，白色或淡红色，长2.5mm，裂片4片；雄蕊4枚；子房2室，花柱线状，略伸出，柱头2裂。蒴果圆球形，径约2.5mm，顶端平截，室背开裂，萼宿存，种子细小，多数 花期7-9月，果期9-10月。分布区域
A one-year-old herbaceous plant with scattered and delicate fibers, growing 15-50cm tall, either glabrous or sparsely covered with powdery fine hairs. The stem branches extensively, and is either hairless or sparsely covered with soft fine hairs. The leaves are opposite, sessile or with short petioles; leaf blades are linear-lanceolate or linear, 1.5-3cm long, 1.5-3.5mm wide, with entire margins; stipules are small or absent, membranous, connate into sheaths, 1-1.5mm long, truncate, with short prickly hairs at the apex. The axillary inflorescences are mostly umbel-like, with 2-5 flowers, rarely solitary; the peduncles are linear, 0.6-2cm long; the calyx is broadly ovate, about 2.5mm long, with 4 toothed lobes at the apex, and covered with fine soft hairs; the corolla is funnel-shaped, white or pale pink, 2.5mm long, with 4 lobes; there are 4 stamens; the ovary is 2-celled, with a linear style slightly protruding and a 2-lobed stigma. The capsule is globose, about 2.5mm in diameter, with a flat truncate apex, dehiscing dorsally, persistent calyx, and small seeds. It flowers from July to September, and fruits from September to October. Distribution area: [missing information].

分布于我国东南、西南各地。生长环境
Distributed in various regions of southeastern and southwestern China. Growing environment.

生于路旁、溪边、旷地、园圃。
Born by the roadside, stream, open field, or garden.