Tatarian Aster Root (ZiYuan)

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    【PROPERTI】Acrid,Bitter,Slightly Warm
    【CHANNELS ENTERED】Lung
    【ACTIONS】Relieves coughs and expels Phlegm
    【Indications/Syndromes】
    Cough of various etiologies including Wind-Cold and Wind-Heat, Lung Deficiency and consumption (Yin Deficiency) (primarily chronic coughing, especially Cold-induced with copious sputum that is difficult to expectorate or Blood streaked sputum);
    Asthma, rebellious Qi, Phlegm with a stale feeling
    【Cautions& Contraindications】
    Use caution for those with coughs due to Yin Deficiency with Heat signs.
    Use caution for those with excessive Heat signs.
    Do not use long term or large doses.
    Counteracts Hb. Artemisiae Yin Chen Hao.


    紫 菀 Tatarian Aster Root

    科名菊科 Compositae

    别名青菀、小辫、返魂草、山白菜,返魂草根,夜牵牛,紫菀茸

    来源为菊科植物紫菀Aster tataricus L. f.的根及根茎。

    植物形态多年生草本,高1~1.5m。茎直立,上部疏生短毛,基生叶丛生,长椭圆形,基部渐狭成翼状柄,边缘具锯齿,两面疏生糙毛,叶柄长,花期枯萎;茎生叶互生,卵形或长椭圆形,渐上无柄。头状花序排成伞房状,有长梗,密被短毛;总苞半球形,总苞片3层,边缘紫红色;舌状花蓝紫色,筒状花黄色。瘦果有短毛,冠毛灰白色或带红色。花期7~8月,果期8~10月。

    生于阴坡、草地、河边。主产河北、安徽、东北及内蒙古。

    采制春、秋季采挖,洗净晒干,或将根编成辫形后晒干。生用或密炙用。

    性状根茎不规则块状,大小不一,顶端有茎、叶的残基,下端偶有末除尽的母根,质梢硬。根茎簇生多数细根,长3~15cm,直径0.1~0.3cm,多编成辫状;表面紫红色或灰红色,有纵皱纹;质较柔韧。气微香,味甜、微苦。

    化学成分 根含紫菀酮(shionone)、槲皮素、无羁萜、表无羁萜和挥发油,尚含紫菀皂甙(astersaponin),水解得常春藤皂甙元(hederagenin)。