Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun penstemon
1 sense of penstemon
Sense 1
Penstemon, genus Penstemon -- (large genus of subshrubs or herbs having showy blue or purple or red or yellow or white flowers; mostly western North America)
=> asterid dicot genus -- (genus of more or less advanced dicotyledonous herbs and some trees and shrubs)