黄背草，中药名。为禾本科植物黄背草ThemedatriandraForsk.Vvar.japonica(Willd.)Makino的全草。具有活血通经，祛风除湿之功效。用于经闭，风湿痹痛。
Huang-bei-cao, name of Chinese Medicinal Material. It refers to the whole plant of Themedatriandra Forsk. Vvar. japonica (Willd.) Makino, a plant of the Gramineae family. It has the functions of promoting blood circulation, regulating menstruation, dispelling wind, and eliminating dampness. It is used for amenorrhea and rheumatic arthralgia.

功效作用 功能
The efficacy and functions.

活血通经，祛风除湿。主治
Promoting blood circulation and removing blood stasis, dispelling wind and eliminating dampness. Used to treat...

用于经闭，风湿痹痛。用法用量
Used for amenorrhea, rheumatic arthralgia. Dosage and administration.

内服：煎汤，30-60g。相关论述
Internal administration: Decoction, 30-60g. Relevant discussion.

《全国中草药汇编》：“活血调经，驱风除湿。主治闭经，风湿疼痛。”临床应用 相关配伍
"Compilation of Chinese Herbal Medicines Nationwide": "Activating blood circulation and regulating menstruation, dispelling wind and eliminating dampness. Used to treat amenorrhea, wind-dampness pain." Clinical application and relevant compatibility.

治腓肠肌痉挛：黄背草15g，大青根皮60g。水煎，黄酒冲服。亦可用于黄疸型肝炎。（《浙江药用植物志》）加工炮制 采收加工
Treatment for spasm of the gastrocnemius muscle: 15g of Huangbacao (黄背草) and 60g of Daqinggenpi (大青根皮). Decoct in water and take with yellow rice wine. It can also be used for jaundice hepatitis. (From "Zhejiang Medicinal Plants Compendium") Processing and preparation: Harvest and process.

夏、秋季采收，晒干。植物学信息 植物种属
Harvest in summer and autumn, then sun-dry. Botanical information: plant species.

禾本科植物黄背草。形态特征
The plant in the family Gramineae is called yellow foxtail. Its morphological characteristics include...

黄背草，多年生草本。秆粗壮，直立，高80-110cm。叶鞘具脱落性的疣基长柔毛；叶舌长1-2mm，先端钝圆，具短纤毛；叶片狭条形，长10-40cm，宽4-5mm，仅上面基部疏被疣基长纤毛。假圆锥花序狭，长30-40cm，佛焰苞舟形，有毛或无毛，总状花序由佛焰苞中抽出，长1-2cm，有7枚小穗，基部有1枚近于轮生的雄性或中性小穗，但无芒；第1颖革质，边缘内卷，第2颖与第1颖等长或较短，边缘膜质，透明；上部3枚小穗中1枚为两性，基盘有髯毛；第1小花的外稃膜质透明，内稃不存在，第2小花的外稃短，有1长芒或无芒。花、果期6-10月。分布区域
Huangbicao is a perennial herbaceous plant. The stem is stout, erect, and 80-110cm tall. The leaf sheath has deciduous verrucose long hairs; the leaf blade is narrowly linear, 10-40cm long and 4-5mm wide, with sparse verrucose long hairs at the base on the upper surface only. The false spike is narrow, 30-40cm long, with boat-shaped glumes, hairy or glabrous. The inflorescence is drawn out from the glumes, 1-2cm long, with 7 spikelets, and a nearly whorled male or neuter spikelet at the base, but without awns. The first lemma is membranous, with inrolled margins, and the second lemma is membranous and transparent, equal to or shorter than the first lemma. One of the upper 3 spikelets is bisexual, with a bearded base; the outer glume of the first floret is membranous and transparent, and the inner glume is absent, while the outer glume of the second floret is short, with a long awn or without awns. The flowering and fruiting period is from June to October. This plant is distributed in [specific area].

东北至华南、西南等地。生长环境
From Northeast to South China, Southwest, and other regions. Growing environment.

生于山坡、路旁等荒脊土地上。
Born on the slopes of mountains, by the roadside, and other barren and hilly land.