Tubers are a type of enlarged structure that plants use as storage organs for nutrients, derived from stems or roots. Tubers help plants perennate (survive winter or dry months), provide energy and nutrients, and are a … See more

A stem tuber forms from thickened rhizomes or stolons. The top sides of the tuber produce shoots that grow into typical stems and leaves and the undersides produce roots. They tend to form at the sides of the parent plant and are most often located near … See more

• Bulb, modified stems with a short fleshy vertical stem, covered by thick fleshy modified leaves that enclose a bud for the next season's growth
• Caudex, a form of stem modification similar in appearance to a tuber See more

The term originates from the Latin tuber, meaning 'lump, bump, or swelling'.
Some writers limit the definition of tuber to structures derived from stems, while others also apply the term to structures derived from roots. See more

A root tuber, tuberous root or storage root is a modified lateral root, enlarged to function as a storage organ. The enlarged area of the tuber can be produced at the end or middle of a root or involve the entire root. It is thus different in origin, but similar in function and … See more

• Cook's Thesaurus has a good inventory of tuber varieties.
• CGIAR Research Program on Roots, Tubers and Bananas See more