Rhizome is short and fleshy, elliptic, about 1 centimeter long, thick 5 millimeter, have bundle of unripe fibrous root.

根茎短而肥厚，椭圆形，长约1厘米，粗5毫米，具束生的须根。

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Rhizomes growth have two main characters: one is that the top of rhizome won't fall off, and continue to grow in the next year and form a long rhizome without branches;

竹鞭的生长有两个特点：一是冬天停止生长的鞭梢不断脱，第二年继续生长，形成不分岔的长鞭段；

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