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Penstemon eriantherus var. eriantherus (18)	Penstemon euglaucus (5)	Penstemon faciculatus (3)	Penstemon fendleri (3)
Penstemon filiformis (29)	Penstemon floridus (12)	Penstemon floridus var. austinii (23)	Penstemon floridus var. floridus (60)
Penstemon fruticiformis (2)	Penstemon fruticiformis ssp. amargosae (4)	Penstemon fruticiformis var. amargosae (11)	Penstemon fruticiformis var. fruticiformis (23)
Penstemon fruticosus (25)	Penstemon gairdneri (13)	Penstemon gairdneri var. gairdneri (4)	Penstemon glaber (10)
Penstemon glaber var. alpinus (17)	Penstemon glaber var. brandegeei (2)	Penstemon globosus (7)	Penstemon gloxinoides (2)
Penstemon gracilentus (68)	Penstemon gracilis (21)	Penstemon grandiflorus (40)	Penstemon griffinii (3)
Penstemon grinnellii (69)	Penstemon grinnellii ssp. scrophularioides (3)	Penstemon grinnellii var. grinnellii (98)	Penstemon grinnellii var. scrophularioides (3)
Penstemon hallii (13)	Penstemon hartwegii (3)	Penstemon haydenii (2)	Penstemon heterodoxus (39)

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