Penstemon rydbergii


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Noun1.Penstemon rydbergii - plant with whorls of small dark blue-violet flowers; Washington to Wyoming and south to California and Colorado
wild flower, wildflower - wild or uncultivated flowering plant
genus Penstemon, Penstemon - large genus of subshrubs or herbs having showy blue or purple or red or yellow or white flowers; mostly western North America