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辟汗草的药材性状与鉴别

ว 2026-09-09 23:09:13ที่ 鉴别方法เ 中国国际医疗服务系统
辟汗草为豆科草木犀属植物草木犀Melilotus suaveolens Ledeb.或小花草木犀Melilotus indicus (L.) All.的全草,别名省头草、野苜蓿、铁扫把、散血草、野长生果、鸡头花草、鸡虱子草、黄花草木犀、臭苜蓿、败毒草、香马料、蛇退草。草木犀为一年生或二年生草本,高60-90cm,茎直立多分枝无毛,三出复叶互生,小叶椭圆形或倒披针形长1-1.5cm宽约0.5cm先端截形微凹基部楔形边缘有疏齿,托叶线形,总状花序细长腋生花多数,花萼钟状萼齿5三角状披针形近等长,花黄色长约4mm旗瓣椭圆形先端圆或微凹基部楔形翼瓣比旗瓣短与龙骨瓣略等长,雄蕊10二体,子房卵状长圆形花柱细长,荚果小倒卵形长3-3.5mm棕色仅1节荚先端有短喙表面具网纹,种子1颗近圆形或椭圆形稍扁,花期6-8月果期7-10月。小花草木犀为二年生草本,高10-50cm,无毛,三出复叶,托叶与叶柄合生,叶片倒披针状长圆形至宽倒卵形先端截形或微凹基部楔形中脉突出边缘中部以上有疏锯齿,总状花序腋生长5-10cm,花萼钟状萼齿披针形与萼筒等长或稍长均被白色柔毛,蝶形花冠黄色旗瓣与翼瓣近等长,雄蕊10二体,子房无柄,荚果卵圆形长2-3mm表面网脉突出有种子1颗,花期6-8月果期7-9月。生于海拔200-3700m的山沟、河岸或田野潮湿处,分布于东北、华北、西北、西南及江苏、安徽、江西、台湾、西藏等地。药材性状:全株或切成小段。茎直立多分枝外表有纵棱绿色或黄绿色。三出复叶互生有柄,小叶片多皱缩展平后长椭圆形或倒披针形长1-3cm宽0.5-1cm先端钝圆或近平截有纤柔小齿基部楔形边缘有细齿,托叶线形长约5mm。总状花序纤细腋生或顶生花多数小形长3-4mm,花萼钟形花冠蝶形黄色二体雄蕊,质轻脆或稍韧气芳香。以色绿、芳香气浓者为佳。辟汗草与苜蓿鉴别:苜蓿为豆科植物紫苜蓿或南苜蓿的全草,性味苦微寒归脾胃经,功能清脾胃、清湿热、利尿、消肿,主治尿结石、膀胱结石、水肿、淋症、消渴;辟汗草为豆科草木犀属植物草木犀的全草,性味辛苦凉归肝脾胃经,功能和中健胃、解暑化湿,主治暑湿胸闷、疟疾、痢疾、淋病、皮肤疮疡,二者同科不同属,性味功效各异,不可混用。
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