Rock Garden Plant Database - Genus:Penstemon

	Penstemon aberrans (M.E.Jones) P.M.Sl. sect. Penstemon
	Penstemon abietinus Pennell sect. Caespitosi
	Penstemon absarokensis Evert sect. Glabri
	Penstemon acaulis L.O.Williams sect. Cristati
	Penstemon acuminatus Douglas ex Lindl. sect. Coerulei
	Penstemon aggregatus Pennell sect. Penstemon
	Penstemon alamosensis Pennell & G.T.Nisbet sect. Gentianoides
	Penstemon albertinus Greene sect. Penstemon
	Penstemon albidus Nutt. sect. Cristati
	Penstemon albomarginatus M.E.Jones sect. Penstemon
	Penstemon alpinus Torr. sect. Glabri
	Penstemon ambiguus Torr. sect. Ambigui
	Penstemon ammophilus N.H.Holmgren & L.M.Shultz sect. Glabri
	Penstemon anguineus Eastw. sect. Penstemon
	Penstemon angustifolius Nutt. ex Pursh sect. Coerulei
	Penstemon arenarius Greene sect. Penstemon
	Penstemon arenicola A.Nelson sect. Coerulei
	Penstemon aridus Rydb. sect. Penstemon
	Penstemon arkansanus Pennell sect. Penstemon
	Penstemon atratus (D.D.Keck) P.M.Sl. sect. Caespitosi
	Penstemon attenuatus Douglas sect. Penstemon
	Penstemon atwoodii S.L.Welsh sect. Cristati
	Penstemon auriberbis Pennell sect. Cristati
	Penstemon azureus Benth. sect. Saccanthera
	Penstemon baccharifolius Hook. sect. Baccharifolii
	Penstemon barnebyi N.H.Holmgren sect. Cristati
	Penstemon barrettiae A.Gray sect. Erianthera
	Penstemon berryi Eastw. sect. Erianthera
	Penstemon bleaklyi O‘Kane & K.D.Heil sect. Penstemon
	Penstemon brachyanthus Pennell sect. Penstemon
	Penstemon bracteatus D.D.Keck sect. Coerulei
	Penstemon bradburyi Pursh sect. Coerulei
	Penstemon brandegeei (Porter) Rydb. sect. Glabri
	Penstemon breviculus (D.D.Keck) G.T.Nisbet & R.C.Jacks. sect. Cristati
	Penstemon brevifolius (A.Gray) A.Nelson sect. Penstemon
	Penstemon buckleyi Pennell sect. Coerulei
	Penstemon caesius A.Gray sect. Saccanthera
	Penstemon caespitosus Nutt. ex A.Gray sect. Caespitosi
	Penstemon calcareus Brandegee sect. Cristati
	Penstemon californicus (Munz & I.M.Johnst.) D.D.Keck sect. Caespitosi
	Penstemon cardwellii Howell sect. Erianthera
	Penstemon carnosus Pennell sect. Coerulei
	Penstemon caryi Pennell sect. Glabri
	Penstemon caudatus A.Heller sect. Coerulei
	Penstemon cephalophorus Greene sect. Penstemon
	Penstemon cinicola D.D.Keck sect. Penstemon
	Penstemon cleburnei M.E.Jones sect. Erianthera
	Penstemon clevelandii A.Gray sect. Spectabiles
	Penstemon clutei A.Nelson sect. Spectabiles
	Penstemon cobaea Nutt. sect. Cristati
	Penstemon coloradoensis A.Nelson sect. Caespitosi
	Penstemon comarrhenus A.Gray sect. Glabri
	Penstemon compactus (D.D.Keck) Crosswh. sect. Glabri
	Penstemon concinnus D.D.Keck sect. Cristati
	Penstemon confertus Douglas sect. Penstemon
	Penstemon confusus M.E.Jones sect. Gentianoides
	Penstemon congestus (M.E.Jones) Pennell sect. Coerulei
	Penstemon crandallii A.Nelson sect. Caespitosi
	Penstemon cusickii A.Gray sect. Saccanthera
	Penstemon cyananthus Hook. sect. Glabri
	Penstemon cyaneus Pennell sect. Glabri
	Penstemon cyanocaulis Payson sect. Glabri
	Penstemon cyathophorus Rydb. sect. Coerulei
	Penstemon dasyphyllus A.Gray sect. Chamaeleon
	Penstemon davidsonii Greene sect. Erianthera
	Penstemon dayanus Howell sect. Erianthera
	Penstemon deaveri Crosswh. sect. Glabri
	Penstemon debilis O‘Kane & J.L.Anderson sect. Glabri
	Penstemon degeneri Crosswh. sect. Penstemon
	Penstemon desertipicti A.Nelson sect. Caespitosi
	Penstemon deustus Douglas sect. Penstemon
	Penstemon diphyllus Rydb. sect. Saccanthera
	Penstemon discolor D.D.Keck sect. Caespitosi
	Penstemon distans N.H.Holmgren sect. Cristati
	Penstemon dolius M.E.Jones sect. Cristati
	Penstemon douglasii Hook. sect. Erianthera
	Penstemon duchesnensis.(N.H.Holmgren) Neese sect. Cristati
	Penstemon elegantulus Pennell sect. Penstemon
	Penstemon ellipticus J.M.Coult. & Fisher sect. Erianthera
	Penstemon eriantherus Nutt. ex Pursh sect. Cristati
	Penstemon euglaucus English sect. Penstemon
	Penstemon exilifolius A.Nelson sect. Cristati
	Penstemon fendleri Torr. & A.Gray sect. Coerulei
	Penstemon filiformis (D.D.Keck) D.D.Keck sect. Saccanthera
	Penstemon flavescens Pennell sect. Penstemon
	Penstemon floribundus Danley sect. Saccanthera
	Penstemon flowersii Neese & S.L.Welsh sect. Coerulei
	Penstemon formosus A.Nelson sect. Penstemon
	Penstemon francisci-pennellii Crosswh. sect. Glabri
	Penstemon franklinii S.L.Welsh sect. Cristati
	Penstemon fremontii Torr. & A.Gray sect. Glabri
	Penstemon fruticiformis Coville sect. Spectabiles
	Penstemon fruticosus (Pursh) Greene sect. Erianthera
	Penstemon gairdneri Hook. sect. Penstemon
	Penstemon gibbensii Dorn sect. Glabri
	Penstemon glaber Pursh sect. Glabri
	Penstemon glabrescens Pennell sect. Caespitosi
	Penstemon glaucinus Pennell sect. Penstemon
	Penstemon globosus (Piper) Pennell & D.D.Keck sect. Penstemon
	Penstemon goodrichii N.H.Holmgren sect. Cristati
	Penstemon gormanii Greene sect. Cristati
	Penstemon gracilentus A.Gray sect. Saccanthera
	Penstemon gracilis Nutt. sect. Penstemon
	Penstemon grahamii D.D.Keck sect. Cristati
	Penstemon griffinii A.Nelson sect. Penstemon
	Penstemon grinnellii Eastw. sect. Spectabiles
	Penstemon guadalupensis A.Heller sect. Cristati
	Penstemon hallii A.Gray sect. Glabri
	Penstemon harbourii A.Gray sect. Penstemon
	Penstemon harringtonii Penland sect. Coerulei
	Penstemon haydenii S.Watson ex J.M.Coult. sect. Coerulei
	Penstemon heterander Torr. & A.Gray sect. Penstemon
	Penstemon heterodoxus A.Gray sect. Penstemon
	Penstemon heterophyllus Lindl. sect. Saccanthera
	Penstemon higginsii (Neese) N.H.Holmgren & N.D.Atwood sect. Saccanthera
	Penstemon hirsutus (L.) Willd. sect. Penstemon
	Penstemon humilis Nutt. ex A.Gray sect. Penstemon
	Penstemon idahoensis N.D.Atwood & S.L.Welsh sect. Glabri
	Penstemon immanifestus N.H.Holmgren sect. Coerulei
	Penstemon incertus Brandegee sect. Spectabiles
	Penstemon inflatus Crosswh. sect. Penstemon
	Penstemon jamesii Benth. sect. Cristati
	Penstemon janishiae N.H.Holmgren sect. Cristati
	Penstemon keckii Clokey sect. Glabri
	Penstemon kingii S.Watson sect. Saccanthera
	Penstemon laetus A.Gray sect. Saccanthera
	Penstemon laevis Pennell sect. Glabri
	Penstemon laricifolius Hook. & Arn. sect. Cristati
	Penstemon laxiflorus Pennell sect. Penstemon
	Penstemon laxus A.Nelson sect. Penstemon
	Penstemon leiophyllus Pennell sect. Glabri
	Penstemon lemhiensis (D.D.Keck) D.D.Keck & Cronquist sect. Glabri
	Penstemon lentus Pennell sect. Coerulei
	Penstemon leonardii Rydb. sect. Saccanthera
	Penstemon linarioides A.Gray sect. Caespitosi
	Penstemon longiflorus (Pennell) S.L.Clark sect. Glabri
	Penstemon luculentus R.L.Johnson & M.R.Stevens sect. Glabri
	Penstemon lyallii (A.Gray) A.Gray sect. Erianthera
	Penstemon macranthus Eastw. sect. Spectabiles
	Penstemon marcusii (D.D.Keck) N.H.Holmgren sect. Cristati
	Penstemon mensarum Pennell sect. Glabri
	Penstemon metcalfei Wooton & Standl. sect. Penstemon
	Penstemon militaris Greene sect. Penstemon
	Penstemon miser A.Gray sect. Cristati
	Penstemon modestus Greene sect. Penstemon
	Penstemon moffatii Eastw. sect. Cristati
	Penstemon monoensis A.Heller sect. Cristati
	Penstemon montanus Greene sect. Erianthera
	Penstemon moriahensis N.H.Holmgren sect. Glabri
	Penstemon mucronatus N.H.Holmgren sect. Coerulei
	Penstemon nanus D.D.Keck sect. Cristati
	Penstemon navajoa N.H.Holmgren sect. Glabri
	Penstemon neomexicanus Wooton & Standl. sect. Glabri
	Penstemon neotericus D.D.Keck sect. Saccanthera
	Penstemon newberryi A.Gray sect. Erianthera
	Penstemon nitidus Douglas ex Benth. sect. Coerulei
	Penstemon nudiflorus A.Gray sect. Glabri
	Penstemon obtusifolius Pennell sect. Penstemon
	Penstemon oklahomensis Pennell sect. Penstemon
	Penstemon oliganthus Wooton & Standl. sect. Penstemon
	Penstemon ophianthus Pennell sect. Cristati
	Penstemon oreganus (A.Gray) Howell sect. Penstemon
	Penstemon oreocharis Greene sect. Penstemon
	Penstemon osterhoutii Pennell sect. Coerulei
	Penstemon pachyphyllus A.Gray ex Rydb. sect. Coerulei
	Penstemon pahutensis N.H.Holmgren sect. Glabri
	Penstemon pallidus Small sect. Penstemon
	Penstemon palmeri A.Gray sect. Spectabiles
	Penstemon palustris Pennell sect. Penstemon
	Penstemon papillatus J.T.Howell sect. Saccanthera
	Penstemon parryi (A.Gray) A.Gray sect. Gentianoides
	Penstemon parvus Pennell sect. Glabri
	Penstemon patens (M.E.Jones) N.H.Holmgren sect. Gentianoides
	Penstemon patricus N.H.Holmgren sect. Saccanthera
	Penstemon payettensis A.Nelson & J.F.Macbr. sect. Glabri
	Penstemon paysoniorum D.D.Keck sect. Glabri
	Penstemon peckii Pennell sect. Penstemon
	Penstemon penlandii W.A.Weber sect. Glabri
	Penstemon pennellianus D.D.Keck sect. Glabri
	Penstemon perbrevis (Pennell) P.M.Sl. sect. Caespitosi
	Penstemon perpulcher A.Nelson sect. Glabri
	Penstemon personatus D.D.Keck sect. Erianthera
	Penstemon petiolatus Brandegee sect. Petiolati
	Penstemon pinifolius Greene sect. Caespitosi
	Penstemon pinorum L.M.Shultz & J.S.Shultz sect. Cristati
	Penstemon platyphyllus Rydb. sect. Saccanthera
	Penstemon praeteritus (Cronquist) P.M.Sl. sect. Erianthera
	Penstemon pratensis Greene sect. Penstemon
	Penstemon procerus Douglas ex Graham sect. Penstemon
	Penstemon procumbens Greene sect. Caespitosi
	Penstemon pruinosus Douglas sect. Penstemon
	Penstemon pseudoparvus Crosswh. sect. Humiles
	Penstemon pseudoprocerus Rydb. sect. Penstemon
	Penstemon pseudoputus (Crosswh.) N.H.Holmgren sect. Glabri
	Penstemon pudicus Reveal & Beatley sect. Saccanthera
	Penstemon pumilus Nutt. sect. Cristati
	Penstemon purpusii Brandegee sect. Saccanthera
	Penstemon putus A.Nelson sect. Glabri
	Penstemon radicosus A.Nelson sect. Penstemon
	Penstemon ramaleyi A.Nelson sect. Caespitosi
	Penstemon redactus (Pennel & D.D.Keck) P.M.Sl. sect. Erianthera
	Penstemon retrorsus Payson sect. Caespitosi
	Penstemon rhizomatosus N.H.Holmgren sect. Saccanthera
	Penstemon roezlii Regel sect. Saccanthera
	Penstemon roseus (Cerv. ex Sweet) G.Don sect. Campanulati
	Penstemon rostriflorus Kellogg sect. Bridgesiani
	Penstemon rupicola (Piper) Howell sect. Erianthera
	Penstemon rydbergii A.Nelson sect. Penstemon
	Penstemon saxosorum Pennell sect. Glabri
	Penstemon scapoides D.D.Keck sect. Saccanthera
	Penstemon scariosus Pennell sect. Glabri
	Penstemon scouleri Douglas sect. Erianthera
	Penstemon secundiflorus Benth. sect. Coerulei
	Penstemon seorsus (A.Nelson) D.D.Keck sect. Penstemon
	Penstemon sepalulus A.Nelson sect. Saccanthera
	Penstemon serrulatus Menzies sect. Saccanthera
	Penstemon shastensis D.D.Keck sect. Penstemon
	Penstemon sileri (A.Gray) P.M.Sl. sect. Caespitosi
	Penstemon sonomensis Greene sect. Erianthera
	Penstemon spatulatus Pennell sect. Penstemon
	Penstemon speciosus Douglas sect. Glabri
	Penstemon strictiformis Rydb. sect. Glabri
	Penstemon strictus Benth. sect. Glabri
	Penstemon subglaber Rydb. sect. Glabri
	Penstemon subserratus Pennell sect. Penstemon
	Penstemon subulatus M.E.Jones sect. Gentianoides
	Penstemon sudans M.E.Jones sect. Penstemon
	Penstemon superbus A.Nelson sect. Gentianoides
	Penstemon teucrioides Greene sect. Caespitosi
	Penstemon thompsoniae (A.Gray) Rydb. sect. Caespitosi
	Penstemon thurberi Torr. sect. Ambigui
	Penstemon tidestromii Pennell sect. Glabri
	Penstemon tiehmii N.H.Holmgren sect. Saccanthera
	Penstemon tolmiei Hook. sect. Penstemon
	Penstemon tracyi D.D.Keck sect. Penstemon
	Penstemon triflorus A.Heller sect. Cristati
	Penstemon triphyllus Douglas sect. Saccanthera
	Penstemon uintahensis Pennell sect. Glabri
	Penstemon utahensis Eastw. sect. Gentianoides
	Penstemon variabilis Suksd. sect. Penstemon
	Penstemon venosus (D.D.Keck) Reveal sect. Coerulei
	Penstemon venustus Douglas sect. Saccanthera
	Penstemon versicolor Pennell sect. Coerulei
	Penstemon virens Pennell ex Rydb. sect. Penstemon
	Penstemon virgatus A.Gray sect. Glabri
	Penstemon wardii A.Gray sect. Glabri
	Penstemon washingtonensis D.D.Keck sect. Penstemon
	Penstemon watsonii A.Gray sect. Penstemon
	Penstemon whippleanus A.Gray sect. Penstemon
	Penstemon whitedii Piper sect. Erianthera
	Penstemon wilcoxii Rydb. sect. Penstemon
	Penstemon xylus A.Nelson sect. Caespitosi
	Penstemon yampaensis Penland sect. Cristati