![]() The pollen-free stamen (or staminode) protrudes from the flower and is covered by small hairs, thus the common name beardtongue. The name is derived from the Greek words penta and stemon, referring to the flower’s five stamens, four of which are fertile and one sterile. Part of the plantain family (Plantaginaceae), penstemons are a huge genus of plants encompassing approximately 270 species and over 800 cultivars and hybrids.
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