It is most important to recognize the characteristics including cylindrical section of rhizome (Yuanlu), drooping advent、主根肩部的线形收缩纹(铁线纹)及带疣状突起的细长柔韧的须根系(珍珠须)是最重要的鉴别性状。
The primary xylem of root (seminal root) his of diarch and that of adventitious root is of triarch.初生根原型,不定根 原型。