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白及,又名双肾草、西牛角、呼良姜、凉姜、紫兰,中药又叫甘根和白根。它属于大名鼎鼎的兰科“家族”,是陆生兰的一种。 白及是多年生草本花卉,地下有块根状、肥厚多汁的假鳞茎,外有荸荠样的环纹,常一个一个地连成一串,内部汁液极富黏性。地上植株连花序高15～50厘米。茎粗壮、劲直。叶3～6片,带状披针形至长椭圆形,长10～20厘米,宽2～5厘米,基部鞘状抱茎而生,平行脉突起使叶平形又成
Baihe, also known as Shuangse Cao, Xi Niu Jiao, Hu Liang Jiang, Liang Jiang, Zi Lan, Chinese medicine is also called Gan root and white root. It belongs to the famous orchid “family” and is a kind of terrestrial orchid. Baihe is a perennial herbaceous flower. Under the ground, there are root-like, hypertrophic, and pseudobulbs. There are ring-like rings on the outside. They are often connected one by one, and the internal juice is very viscous. Plants on the ground are 15 to 50 cm tall. Stem thick, straight. Leaves 3~6, band-lanceolate to oblong, 10 to 20 cm long, 2 to 5 cm wide, base sheathing amplexicaul, parallel veins bulging and flat