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紫菀又叫青菀、紫归、返魂草,属菊科植物,为多年生草本,茎直立。根茎短呈不规则块状,其下簇生多数细根,外皮紫红色或灰红色,有纵皱纹,质地较柔韧。紫菀根及根茎人药,性温、味甜、微苦、无毒。有散寒、润肺下气、消痰止咳之功效。现代药理研究认为,紫菀对金黄色葡萄球菌、痢疾杆菌、伤寒杆菌、大肠杆菌均有抑制作用。紫菀性喜温暖、湿润的自然环境,并有一定的抗寒能力,对土质要求不严,除了碱或干旱沙土外,一
Aster, also known as barley, Zi Gui, return to the grass, is Compositae, perennial herb, stem erect. Short rhizome irregular block, the majority of fine tufted roots, crusts purple or gray, with vertical wrinkles, texture is more pliable. Aster root and rhizome human medicine, warm, sweet, slightly bitter, non-toxic. A cold, lungs gas, Phlegm cough effect. Modern pharmacological studies believe that Aster on Staphylococcus aureus, Shigella, Salmonella typhi, Escherichia coli have inhibited. Prickly heat like warm, moist natural environment, and have some cold ability, lax requirements of the soil, in addition to alkali or arid sand, a