1. large genus of subshrubs or herbs having showy blue or purple or red or yellow or white flowers; mostly western North America; [syn: Penstemon, genus Penstemon]
WordNet (r) 3.0 (2006):
genus Penstemon
n 1: large genus of subshrubs or herbs having showy blue or
purple or red or yellow or white flowers; mostly western
North America [syn: Penstemon, genus Penstemon]