Palmer's Penstemon

Penstemon absarokensis

Penstemon retrorsus

Penstemon albertinus

Penstemon janishiae

Penstemon oliganthus

Penstemon parvus

Penstemon arkansanus

Penstemon cinicola

Penstemon azureus

Penstemon parvulus

Penstemon baccharifolius

Penstemon barrettiae

Penstemon rostriflorus

Penstemon barbatus

Penstemon campanulatus

Penstemon havardii

Penstemon putus

Penstemon haydenii

Penstemon pennellianus

Penstemon cyaneus

Penstemon glaucinus

Penstemon cyanocaulis

Penstemon angustifolius

Penstemon platyphyllus

Penstemon X bryantiae

Penstemon buckleyi

Penstemon heterophyllus

Penstemon fruticosus

Penstemon X mirus

Penstemon californicus

Penstemon cardinalis

Penstemon cardwellii

Penstemon caryi

Penstemon discolor

Penstemon pruinosus

Penstemon clevelandii

Penstemon rupicola

Penstemon personatus

Penstemon cobaea

Penstemon dasyphyllus

Penstemon ophianthus

Penstemon auriberbis

Penstemon compactus

Penstemon floribundus

Penstemon montanus

Penstemon crandallii

Penstemon X crideri

Penstemon cusickii

Penstemon richardsonii

Penstemon davidsonii

Penstemon deamii

Penstemon fruticiformis

Penstemon degeneri

Penstemon pseudospectabilis

Penstemon dissectus

Penstemon duchesnensis

Penstemon comarrhenus

Penstemon nanus

Penstemon canescens

Penstemon laevigatus

Penstemon tenuiflorus

Penstemon ovatus

Penstemon australis

Penstemon fendleri

Penstemon subserratus

Penstemon eatonii

Penstemon abietinus

Penstemon nudiflorus

Penstemon carnosus

Penstemon flowersii

Penstemon franklinii

Penstemon fremontii

Penstemon virens

Penstemon eriantherus

Penstemon gairdneri

Penstemon gentianoides

Penstemon teucrioides

Penstemon gibbensii

Penstemon ambiguus

Penstemon euglaucus

Penstemon globosus

Penstemon gormanii

Penstemon griffinii

Penstemon grinnellii

Penstemon guadalupensis

Penstemon subulatus

Penstemon hirsutus

Penstemon hallii

Penstemon lentus

Penstemon harbourii

Penstemon harringtonii

Penstemon hartwegii

Penstemon triflorus

Penstemon flavescens

Penstemon idahoensis

Penstemon inflatus

Penstemon papillatus

Penstemon jamesii

Penstemon dolius

Penstemon pseudoputus

Penstemon atwoodii

Penstemon pudicus

Penstemon kingii

Penstemon lanceolatus

Penstemon goodrichii

Penstemon laricifolius

Penstemon grandiflorus

Penstemon lemhiensis

Penstemon leonardii

Penstemon gracilis

Penstemon calcareus

Penstemon sepalulus

Penstemon procerus

Penstemon patens

Penstemon longiflorus

Penstemon calycosus

Penstemon alamosensis

Penstemon humilis

Penstemon lyallii

Penstemon miser

Penstemon strictiformis

Penstemon multiflorus

Penstemon marcusii

Penstemon caespitosus

Penstemon radicosus

Penstemon rydbergii

Penstemon metcalfei

Penstemon perpulcher

Penstemon moffatii

Penstemon incertus

Penstemon monoensis

Penstemon distans

Penstemon laetus

Penstemon newberryi

Penstemon deaveri

Penstemon moriahensis

Penstemon mucronatus

Penstemon navajoa

Penstemon arenarius

Penstemon neomexicanus

Penstemon laxiflorus

Penstemon oklahomensis

Penstemon osterhoutii

Penstemon confusus

Penstemon pahutensis

Penstemon pallidus

Penstemon palmeri

Penstemon floridus

Penstemon debilis

Penstemon parryi

Penstemon payettensis

Penstemon paysoniorum

Penstemon peckii

Penstemon penlandii

Penstemon petiolatus

Penstemon pinorum

Penstemon pinifolius

Penstemon bicolor

Penstemon scapoides

Penstemon neotericus

Penstemon rattanii

Penstemon bracteatus

Penstemon triphyllus

Penstemon elegantulus

Penstemon ellipticus

Penstemon strictus

Penstemon roezlii

Penstemon speciosus

Penstemon cyathophorus

Penstemon pumilus

Penstemon caesius

Penstemon labrosus

Penstemon arenicola

Penstemon ammophilus

Penstemon glaber

Penstemon deustus

Penstemon murrayanus

Penstemon centranthifolius

Penstemon rhizomatosus

Penstemon serrulatus

Penstemon acuminatus

Penstemon tenuis

Penstemon seorsus

Penstemon breviculus

Penstemon spectabilis

Penstemon secundiflorus

Penstemon heterodoxus

Penstemon anguineus

Penstemon gracilentus

Penstemon smallii

Penstemon subglaber

Penstemon leiophyllus

Penstemon purpusii

Penstemon stenophyllus

Penstemon laevis

Penstemon acaulis

Penstemon stephensii

Penstemon immanifestus

Penstemon glandulosus

Penstemon aridus

Penstemon attenuatus

Penstemon clutei

Penstemon superbus

Penstemon sudans

Penstemon digitalis

Penstemon pachyphyllus

Penstemon thompsoniae

Penstemon filiformis

Penstemon thurberi

Penstemon tidestromii

Penstemon tiehmii

Penstemon mensarum

Penstemon linarioides

Penstemon tracyi

Penstemon laxus

Penstemon concinnus

Penstemon tusharensis

Penstemon diphyllus

Penstemon grahamii

Penstemon uintahensis

Penstemon saxosorum

Penstemon virgatus

Penstemon utahensis

Penstemon versicolor

Penstemon venustus

Penstemon spatulatus

Penstemon wardii

Penstemon cyananthus

Penstemon washingtonensis

Penstemon rubicundus

Penstemon watsonii

Penstemon nitidus

Penstemon pratensis

Penstemon whippleanus

Penstemon albomarginatus

Penstemon albidus

Penstemon scariosus

Penstemon barnebyi

Penstemon tubiflorus

Penstemon wilcoxii

Penstemon wrightii

Penstemon yampaensis

Penstemon confertus