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Rhizomes: Thickened, branching, creeping storage stems. Although most rhizomes grow laterally just along or slightly below the soil's surface, some grow several inches deep. Roots grow from the underside of the rhizome, and during the growing season new growth sprouts from buds along the top. A familiar rhizome is the ginger used in cooking.
Tubers: In plants, stems or roots that acts as an underground storage organ. Roots and shoots grow from growth buds, called ‘eyes', on the surface of the tuber.
Wattle: Bare fleshy skin that hangs from the bill, throat or eye of birds.