noun
- Plant with whorls of small dark blue-violet flowers; Washington to Wyoming and south to California and Colorado.
- synonyms: Rydberg's penstemon
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). Penstemon rydbergii. Retrieved September 25, 2026, from http://smartdefine.org/penstemon_rydbergii/definitions/1301095 |
| Chicago | WordNet. 2010. "Penstemon rydbergii" http://smartdefine.org/penstemon_rydbergii/definitions/1301095 (accessed September 25, 2026). |
| Harvard | WordNet 2010, Penstemon rydbergii, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/penstemon_rydbergii/definitions/1301095>. |
| MLA | WordNet. "Penstemon rydbergii" 23 October 2010. Web. 25 September 2026. <http://smartdefine.org/penstemon_rydbergii/definitions/1301095> |