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Definition of Rydberg's penstemon
1. Noun. Plant with whorls of small dark blue-violet flowers; Washington to Wyoming and south to California and Colorado.
Exact synonyms: Penstemon Rydbergii
Generic synonyms: Wild Flower, Wildflower
Group relationships: Genus Penstemon, Penstemon
Generic synonyms: Wild Flower, Wildflower
Group relationships: Genus Penstemon, Penstemon