葛根花为植物葛根的葛根根花花。总状花序15~30公分，花图花中央较密；苞片线状披针状到线状，片葛较小苞片较短；小苞片，图片椭圆形，葛根根花小于2mm；花序轴上有2-3个花簇；花萼钟状，花图8~10mm，片葛被短柔毛，图片具披针状的葛根根花裂片，稍长于萼筒；花冠10~12mm，花图紫红色，片葛倒卵形的图片旗瓣。
功效：味甘、葛根根花辛，花图性凉；归脾、片葛胃经。具有解肌退热，透疹，生津止渴，升阳止泻的功效。
禁忌：虚寒者忌用，胃寒呕吐者慎用。
温馨提示：医疗科普知识仅供参考，不作诊断依据；无行医资格切勿自行操作，若有不适请到医院就诊
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