the world > plants > by growth or development > defined by habit > [noun] > that grows buds below ground (3)
A perennial plant which propagates by means of underground buds or has an underground storage organ such as a bulb, corm, or rhizome.
Botany. A plant in which the dormant buds are below the surface of the soil or submerged under water. Cf. geophyte, n.
(See quot. 1932.) Also attributive.