Penstemon

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Species and varieties
Penstemon ambiguus Sand Penstemon, Bush Penstemon
Penstemon baccharifolius Rock Penstemon, Baccharis-Leaf Penstemon
Penstemon barbatus Beardlip Penstemon
Penstemon centranthifolius Scarlet Bugler
Penstemon davidsonii
Penstemon digitalis Talus Slope Penstemon
Penstemon eatonii Firecracker Penstemon
Penstemon gloxinioides Border Penstemon, Garden penstemon
Penstemon heterophyllus ssp. purdyi
Penstemon palmeri Palmer Penstemon, Balloon Flower
Penstemon parryi Parry's Penstemon
Penstemon pinifolius Pineneedle Beardtongue
Penstemon pseudospectabilis Desert Beard Tongue, Canyon Penstemon
Penstemon rupicola
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
Synonym and obsolete names
Penstemon ambiguus var. thurberi synonym of Penstemon thurberi (Desert Surprise, Thurber's Beardtongue)
Penstemon cordifolius synonym of Keckiella cordifolia
Penstemon fremonti var. parryi synonym of Penstemon parryi (Parry's Penstemon)
Penstemon heterophyllus var. purdyi synonym of Penstemon heterophyllus ssp. purdyi
Penstemon laevigatus var. angulatus synonym of Penstemon digitalis (Talus Slope Penstemon)
Penstemon laevigatus ssp. digitalis synonym of Penstemon digitalis (Talus Slope Penstemon)
Penstemon puniceus synonym of Penstemon superbus (Superb Penstemon, Superb Beardtongue)

 

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