Plantae > Tracheophyta > Magnoliopsida > Lamiales > Plantaginaceae > Penstemon rydbergii > Penstemon rydbergii var. aggregatus Penstemon rydbergii var. aggregatus (Meadow beardtongue)Synonyms: Penstemon aggregatus (homotypic); Penstemon rydbergii aggregatus (homotypic)
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