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山大颜的性味归经与功能主治

ว 2026-09-09 23:07:34ที่ 药材基原เ 中国国际医疗服务系统
山大颜,英文名称Psychotria asiatica L,其他名称九节木、大罗伞、山大刀、暗山公、刀枪木。来源为茜草科九节属植物九节木Psychotria rubra(Lour.)Poir.的干燥根、叶。性状:本品茎圆柱形,枝近四方形,茎节略膨大,或见环状的托叶痕及对生的三角形叶痕,表面棕褐色,有纵裂纹;皮部薄,易剥落;断面中空,并可见圆环状线纹。叶纸质,皱缩,完整叶片展开后呈长圆形、椭圆形或披针状长圆形;先端渐尖,基部渐狭成柄;表面暗红色,下表面淡红色,网脉突出明显,侧脉腋内可见簇生短柔毛。气微,味淡。以茎枝粗大均匀、色棕红者为佳。采收加工:全年采集,鲜用或洗净切片晒干。性味归经:味苦,性凉。功能主治:清热解毒,消肿拔毒。根、叶用于白喉,扁桃体炎,咽喉炎,痢疾,肠伤寒,胃痛,风湿骨痛;叶外用治跌打肿痛,外伤出血,毒蛇咬伤,疮疡肿毒,下肢溃疡。形态特征:常绿灌木,高1~3米。幼枝近四棱形,老枝近圆形,光滑;枝有明显的节。叶对生,纸质,椭圆状矩圆形,边波状,干时红色。托叶阔,膜质,早落。圆锥花序顶生及腋生,3歧,短于上部叶;花冠浅绿色或白色,裂片短三角形,冠管阔,裂片披针形,外翻;雄蕊5,着生于冠喉部。核果近球形,长约6毫米,熟时红色,光滑;小坚果有棱4~5条。花期秋季。生境分布:生于荒野灌丛、村边、林缘等处。分布于我国西南部、南部至东南部。印度、中南半岛和日本均有。用法与用量:内服15~30g,煎服。外用适量,煎水熏洗、研末调敷,鲜品捣烂敷患处。验方:1、白喉:山大颜鲜嫩叶,1岁以内1两2钱,1~3岁2两4钱,4~5岁3两,6~10岁5两,水煎,分4次服。2、下肢溃疡:山大颜嫩叶,沸水烫过使叶较软,如溃疡面腐肉多,用叶背向溃疡面贴;如溃疡面干净,用叶面向溃疡面贴。每日早晚各换药一次。3、肠伤寒:山大颜根、叶晒干研粉。成人每次服2~3克(儿童0.5克),每日3次。
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