Search Result：Rydberg's penstemon
rydberg's penstemon 
(TTS Sound)
(TTS Sound)Overview of noun rydberg's_penstemon
The noun rydberg's penstemon has 1 sense
- Rydberg's penstemon, Penstemon rydbergii -- (plant with whorls of small dark blue-violet flowers; Washington to Wyoming and south to California and Colorado)