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CCDB → Angiosperms → Plantaginaceae → Penstemon

168 species in "Penstemon" :

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Taxon name	Status	Median (n)
Penstemon alamosensis Pennell & G. T. Nisbet	Accepted	8
Penstemon albertinus Greene	Accepted	8
Penstemon albidus Nutt.	Accepted	8
Penstemon albomarginatus M. E. Jones	Accepted	8
Penstemon alpinus Torr.	Accepted	8
Penstemon ambiguus Torr.	Accepted	8
Penstemon apateticus Straw	Accepted	8
Penstemon arenarius Greene	Accepted	8
Penstemon arkansanus Pennell	Accepted	8
Penstemon attenuatus Douglas ex Lindl.	Accepted	24
Penstemon attenuatus var. militaris (Greene) Cronquist	Accepted	16
Penstemon auriberbis Pennell	Accepted	8
Penstemon azureus Benth.	Accepted	16
Penstemon barbatus (Cav.) Roth	Accepted	8
Penstemon barbatus subsp. torreyi (Benth.) D. D. Keck	Accepted	8
Penstemon barbatus subsp. trichander (A. Gray) D. D. Keck	Accepted	8
Penstemon barrettiae A. Gray	Accepted	8
Penstemon brandegeei (Porter) Rydb.	Accepted	8
Penstemon bridgesii A. Gray	Accepted	21
Penstemon buckleyi Pennell	Accepted	8
Penstemon caespitosus var. desertipicti (A. Nelson) N. H. Holmgren	Accepted	16
Penstemon calycosus Small	Accepted	48
Penstemon campanulatus (Cav.) Willd.	Accepted	8
Penstemon cardinalis Wooton & Standl.	Accepted	8
Penstemon cardwellii Howell	Accepted	8
Penstemon cinicola D. D. Keck	Accepted	16
Penstemon cobaea Nutt.	Accepted	8
Penstemon compactus (D. D. Keck) Crosswh.	Accepted	8
Penstemon confertus Douglas ex Lindl.	Accepted	16
Penstemon confusus M. E. Jones	Accepted	8
Penstemon cyananthus Hook.	Accepted	8
Penstemon dasyphyllus A. Gray	Accepted	8
Penstemon davidsonii Greene	Accepted	8
Penstemon degeneri Crosswh.	Accepted	8
Penstemon deustus Douglas ex Lindl.	Accepted	8
Penstemon digitalis Nutt. ex Sims	Accepted	48
Penstemon dissectus Elliott	Accepted	8
Penstemon eatonii A. Gray	Accepted	8
Penstemon eatonii subsp. exsertus (A. Nelson) D. D. Keck	Accepted	8
Penstemon ellipticus J. M. Coult. & Fisher	Accepted	8
Penstemon euglaucus English	Accepted	24
Penstemon eximius D. D. Keck	Accepted	8
Penstemon fasciculatus A. Gray	Accepted	8
Penstemon fendleri Torr. & A. Gray	Accepted	8
Penstemon flavescens Pennell	Accepted	24
Penstemon fruticosus (Pursh) Greene	Accepted	8
Penstemon gairdneri Hook.	Accepted	8
Penstemon gentianoides (Kunth) Poir.	Accepted	8
Penstemon glaber Pursh	Accepted	8
Penstemon globosus (Piper) Pennell & S. Keck & D. Daniels	Accepted	16
Penstemon gormanii Greene	Accepted	8
Penstemon gracilis Nutt.	Accepted	8
Penstemon grandiflorus Nutt.	Accepted	8
Penstemon harbourii A. Gray	Accepted	8
Penstemon hartwegii Benth.	Accepted	8
Penstemon haydenii S. Watson	Accepted	8
Penstemon hidalgensis Straw	Accepted	8
Penstemon hirsutus (L.) Willd.	Accepted	8
Penstemon isophyllus B. L. Rob.	Accepted	8
Penstemon jamesii Benth.	Accepted	8
Penstemon kunthii G. Don	Accepted	8
Penstemon labrosus (A. Gray) Mast. ex Hook.	Accepted	8
Penstemon laevigatus Soland.	Accepted	48
Penstemon lanceolatus Benth.	Accepted	8
Penstemon laxiflorus Pennell	Accepted	8
Penstemon leonardii Rydb.	Accepted	8
Penstemon leonensis Straw	Accepted	8
Penstemon linarioides A. Gray	Accepted	8
Penstemon navajoa N. H. Holmgren	Accepted	8
Penstemon neotericus D. D. Keck	Accepted	32
Penstemon newberryi A. Gray	Accepted	8
Penstemon nitidus Douglas ex Benth.	Accepted	8
Penstemon oklahomensis Pennell	Accepted	8
Penstemon oliganthus Wooton & Standl.	Accepted	8
Penstemon ophianthus Pennell	Accepted	8
Penstemon ovatus Douglas	Accepted	8
Penstemon pachyphyllus var. congestus (M. E. Jones) N. H. Holmgren	Accepted	8
Penstemon pahutensis N. H. Holmgren	Accepted	8
Penstemon pallidus Small	Accepted	8
Penstemon palmeri A. Gray	Accepted	8
Penstemon parishii A. Gray	Accepted	8
Penstemon peckii Pennell	Accepted	8
Penstemon pinifolius Greene	Accepted	8
Penstemon platyphyllus Rydb.	Accepted	16
Penstemon pratensis Greene	Accepted	16
Penstemon procerus Douglas ex Graham	Accepted	8
Penstemon pruinosus Douglas ex Lindl.	Accepted	8
Penstemon pseudospectabilis M. E. Jones	Accepted	8
Penstemon purpusii Brandegee	Accepted	8
Penstemon putus A. Nelson	Accepted	8
Penstemon radicosus A. Nelson	Accepted	8
Penstemon rostriflorus Kellogg	Accepted	8
Penstemon rydbergii A. Nelson	Accepted	16
Penstemon secundiflorus Benth.	Accepted	8
Penstemon serrulatus Menzies ex Sm.	Accepted	8
Penstemon shastensis D. D. Keck	Accepted	16
Penstemon smallii A. Heller	Accepted	8
Penstemon speciosus Douglas ex Lindl.	Accepted	8
Penstemon spectabilis Thurb. ex A. Gray	Accepted	8
Penstemon strictus Benth.	Accepted	8
Penstemon subglaber Rydb.	Accepted	8
Penstemon subserratus Pennell	Accepted	16
Penstemon subulatus M. E. Jones	Accepted	8
Penstemon teucrioides Greene	Accepted	8
Penstemon thompsoniae (A. Gray) Rydb.	Accepted	8
Penstemon triphyllus Douglas	Accepted	8
Penstemon tubaeflorus Nutt.	Accepted	16
Penstemon venustus Douglas ex Lindl.	Accepted	32
Penstemon virens Pennell ex Rydb.	Accepted	8
Penstemon virgatus A. Gray	Accepted	8
Penstemon whippleanus A. Gray	Accepted	8
Penstemon wilcoxii Rydb.	Accepted	8
Penstemon wrightii Hook.	Accepted	8
Penstemon cristatus Nutt.	Unresolved	8
Penstemon griffinii A. Nelson	Unresolved	8
Penstemon inflatus Crosswh.	Unresolved	8
Penstemon pseudoparvus Crosswh.	Unresolved	8
Penstemon ramaleyi A. Nelson	Unresolved	8
Penstemon superbus A. Nelson	Unresolved	8
Penstemon nemorosus (Douglas) Trautv.	Synonym of Nothochelone nemorosa (Douglas) Straw	None
Penstemon frutescens Lamb.	Synonym of Pennellianthus frutescens Crosswhite	20
Penstemon alamosensis None	Synonym of Penstemon alamosensis Pennell & G. T. Nisbet	8
Penstemon ambiguus	Synonym of Penstemon ambiguus Torr.	8
Penstemon clevelandii var. angelicus I. M. Johnst.	Synonym of Penstemon angelicus (I. M. Johnst.) Moran	8
Penstemon angustifolius	Synonym of Penstemon angustifolius Nutt. ex Pursh	8
Penstemon angustifolius var. angustifolius	Synonym of Penstemon angustifolius Nutt. ex Pursh	8
Penstemon angustifolius subsp. caudatus (A. Heller) Rydb.	Synonym of Penstemon angustifolius subsp. caudatus (A. Heller) D. D. Keck	8
Penstemon azureus var. azureus	Synonym of Penstemon azureus Benth.	16
Penstemon barrettiae	Synonym of Penstemon barrettiae A. Gray	8
Penstemon campanulatus subsp. chihuahuensis Straw	Synonym of Penstemon campanulatus var. chihuahuensis (Straw) B. L. Turner	8
Penstemon cardinalis	Synonym of Penstemon cardinalis Wooton & Standl.	8
Penstemon cinereus subsp. cinereus	Synonym of Penstemon cinereus Piper	8
Penstemon cobaea	Synonym of Penstemon cobaea Nutt.	8
Penstemon cobaea var. purpureus Pennell	Synonym of Penstemon cobaea subsp. purpureus (Pennell) Pennell	8
Penstemon crandallii	Synonym of Penstemon crandallii A. Nelson	8
Penstemon glabrescens Pennell	Synonym of Penstemon crandallii subsp. glabrescens (Pennell) D. D. Keck	8
Penstemon cyananthus var. cyananthus	Synonym of Penstemon cyananthus Hook.	8
Penstemon cyananthus var. subglaber Pennell	Synonym of Penstemon cyananthus var. subglaber (A. Gray) N. H. Holmgren	8
Penstemon davidsonii	Synonym of Penstemon davidsonii Greene	8
Penstemon deustus var. deustus	Synonym of Penstemon deustus Douglas ex Lindl.	8
Penstemon eatonii subsp. eatonii	Synonym of Penstemon eatonii A. Gray	8
Penstemon eriantherus var. eriantherus	Synonym of Penstemon eriantherus Pursh	8
Penstemon fasciculatus	Synonym of Penstemon fasciculatus A. Gray	8
Penstemon floridus var. floridus	Synonym of Penstemon floridus Brandegee	8
Penstemon fruticosus var. fruticosus	Synonym of Penstemon fruticosus (Pursh) Greene	8
Penstemon glaber var. glaber	Synonym of Penstemon glaber Pursh	8
Penstemon gracilis var. gracilis	Synonym of Penstemon gracilis Nutt.	8
Penstemon gracilis var. wisconsinensis Pennell	Synonym of Penstemon gracilis var. wisconsinensis (Pennell) Fassett	8
Penstemon griffinii None	Synonym of Penstemon griffinii A. Nelson	8
Penstemon grinnellii var. grinnellii	Synonym of Penstemon grinnellii Eastw.	8
Penstemon humilis subsp. brevifolius None	Synonym of Penstemon humilis subsp. brevifolius (A. Gray) D. D. Keck	8
Penstemon inflatus Crosswhite	Synonym of Penstemon inflatus Crosswh.	8
Penstemon laetus var. laetus	Synonym of Penstemon laetus A. Gray	8
Penstemon linarioides	Synonym of Penstemon linarioides A. Gray	8
Penstemon cyananthus subsp. longiflorus Pennell	Synonym of Penstemon longiflorus (Pennell) S. L. Clark	8
Penstemon apateticus subsp. townsendianus Straw	Synonym of Penstemon miniatus var. townsendianus (Straw) C. C. Freeman	8
Penstemon moffatii	Synonym of Penstemon moffatii Eastw.	8
Penstemon nitidus var. nitidus	Synonym of Penstemon nitidus Douglas ex Benth.	8
Penstemon palmeri var. palmeri	Synonym of Penstemon palmeri A. Gray	8
Penstemon procerus var. procerus	Synonym of Penstemon procerus Douglas ex Graham	8
Penstemon procerus var. tolmiei (Hook.) Cronq.	Synonym of Penstemon procerus var. tolmiei (Hook.) Cronquist	8
Penstemon tolmiei Hook.	Synonym of Penstemon procerus var. tolmiei (Hook.) Cronquist	8
Penstemon virgatus subsp. pseudoputus Crosswh.	Synonym of Penstemon pseudoputus (Crosswh.) N. H. Holmgren	8
Penstemon clutei A. Nelson	Synonym of Penstemon pseudospectabilis subsp. clutei (A. Nelson) D. D. Keck	8
Penstemon pseudospectabilis subsp. connatifolius (Nelson) D. D. Keck	Synonym of Penstemon pseudospectabilis subsp. connatifolius (A. Nelson) D. D. Keck	8
Penstemon aggregatus Pennell	Synonym of Penstemon rydbergii var. aggregatus (Pennell) N. H. Holmgren	16
Penstemon strictus	Synonym of Penstemon strictus Benth.	8
Penstemon tubiflorus	Synonym of Penstemon tubiflorus Nutt.	16