prop. n. A genus of evergreen shrubs of the north temperate regions.
Syn. -- genus Ledum. [ WordNet 1.5 ]

‖n. [ NL., fr. L. sedere to sit; so called in allusion to the manner in which the plants attach themselves to rocks and walls. ] (Bot.) A genus of plants, mostly perennial, having succulent leaves and cymose flowers; orpine; stonecrop. Gray. [ 1913 Webster ]