A tuberous root is a modified lateral root, enlarged for storage. It is thus different in origin but similar in function and coarse appearance to a tuber. Examples include the sweet potato and Dahlia.
TUBER: A tuber is a thickened, usually underground, food-storing organ (like a corm) that lacks both a basal plate and tunic-like covering, which corms and bulbs have.
Roots and shoots grow from growth buds, called "eyes", on the surface of the tuber.
Daylilies, dahlias, and foxtail lilies have tuberousroots.
Root vegetables are underground plant parts used as vegetables.
They are called root vegetables for lack of a better generic term, but include both true roots such as tuberousroots and taproots, as well as non-roots such as tubers, rhizomes, corms, and bulbs.
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