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寻骨风的原植物、性状与显微鉴别

ว 2026-09-10 00:18:33ที่ https://doc.wiki8.cn/xungufeng_80949/เ admin

寻骨风为多年生草质藤本,根细长圆柱形,嫩枝密被灰白色长绵毛。叶互生,叶片卵形、卵状心形,长3.5~10厘米,宽2.5~8厘米,先端钝圆至短尖,基部心形,上面被糙伏毛,下面密被灰色或白色长绵毛,基出脉5~7条。花单生于叶腋,花被管中部急剧弯曲,檐部盘状,浅黄色并有紫色网纹。蒴果长圆状或椭圆状倒卵形,具6条波状或扭曲的棱或翅。性状鉴别:根茎细长圆柱形,多分枝,直径约2毫米,表面棕黄色有纵向纹理,质韧而硬断面黄白色;茎淡绿色密被白色绵毛;叶皱缩卷曲灰绿色或黄绿色,展平后呈卵状心形,两面密被白绵毛。气微香,味苦、辛。全草以叶色绿、根茎多、香气浓者为佳。显微鉴别可见根茎表皮有多细胞非腺毛,皮层石细胞单个散在,薄壁细胞含簇晶。理化鉴别以马兜铃酸A为对照品进行薄层色谱鉴别。

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