Penstemon

Species and varieties
Penstemon ambiguus (Sand Penstemon, Bush Penstemon)
Penstemon ambiguus var. thurberi (Desert Surprise, Thurber's Beardtongue) synonym of Penstemon thurberi
Penstemon baccharifolius (Rock Penstemon, Baccharis-Leaf Penstemon)
Penstemon eatonii (Firecracker Penstemon)
Penstemon fremonti var. parryi (Parry's Penstemon) synonym of Penstemon parryi
Penstemon palmeri (Palmer Penstemon, Balloon Flower)
Penstemon parryi (Parry's Penstemon)
Penstemon pseudospectabilis (Desert Beard Tongue, Canyon Penstemon)
Penstemon puniceus A. Gray non Lilja (Superb Penstemon, Superb Beardtongue) synonym of Penstemon superbus
Penstemon spectabilis (Showy Penstemon, Royal Beard Tongue)
Penstemon strictus (Rocky Mountain Penstemon, Porch Penstemon)
Penstemon superbus (Superb Penstemon, Superb Beardtongue)
Penstemon thurberi (Desert Surprise, Thurber's Beardtongue)

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