Rhizome
Rhizome, or Rootstock, a fleshy horizontal underground stem of some perennial herbs. Rhizomes bear buds and roots and store food for new shoots of the plant. Banana plants, iris, and wild ginger are some of the plants that grow from rhizomes. Solomon's seal, a plant of the lily-of-the-valley family, gets its name from the scars that dead shoots leave on its rootstock, or rhizome, after they break off.