Rhizome
Rhizomes are thick, fleshy, horizontal underground stems. Some rhizomes may lie directly on the soil surface (bearded iris). Foliage, roots and flowers grow from buds on the rhizome. Rhizomes generally creep or spread, unlike tubers.
Rhizomes are usually divided so pieces contain at least one fan or group of foliage and significant amount of roots.
Examples include:
Iris Oxalis Zantedeschia (Calla Lily)
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