Rhizome

In botany and dendrology, a rhizome is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow horizontally.

The rhizome also retains the ability to allow new shoots to grow upwards.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 3.0

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