Penstemon abietinus (firleaf beardtongue) (Attributes)
Penstemon aboriginum
Penstemon absarokensis (Absaroka Range beardtongue) (Attributes)
Penstemon acaulis (stemless beardtongue) (Attributes)
Penstemon acuminatus (sharpleaf penstemon) (Attributes)
Penstemon alamosensis (Los Alamos beardtongue) (Attributes)
Penstemon albertinus (Alberta beardtongue) (Attributes)
Penstemon albidus (white penstemon) (Attributes)
Penstemon albomarginatus (white margin penstemon) (Attributes)
Penstemon ambiguus (gilia beardtongue) (Attributes)
Penstemon ammophilus (sandloving penstemon) (Attributes)
Penstemon amphorellae
Penstemon anguineus (Siskiyou beardtongue) (Attributes)
Penstemon angustifolius (broadbeard beardtongue) (Attributes)
Penstemon arenarius (Nevada sanddune beardtongue) (Attributes)
Penstemon arenicola (sand penstemon) (Attributes)
Penstemon aridus (stiffleaf penstemon) (Attributes)
Penstemon arkansanus (Arkansas beardtongue) (Attributes)
Penstemon atropurpureus
Penstemon attenuatus (sulphur penstemon) (Attributes)
Penstemon atwoodii (Kaiparowits beardtongue) (Attributes)
Penstemon auriberbis (Colorado beardtongue) (Attributes)
Penstemon auricomus
Penstemon australis (Eustis Lake beardtongue) (Attributes)
Penstemon azureus (azure penstemon) (Attributes)
Penstemon baccharifolius (baccharisleaf beardtongue) (Attributes)
Penstemon bachimbensis
Penstemon barbatus (beardlip penstemon) (Attributes)
Penstemon barnebyi (Barneby's penstemon) (Attributes)
Penstemon barrettiae (Barrett's beardtongue) (Attributes)
Penstemon bicolor (pinto beardtongue) (Attributes)
Penstemon bleaklyi
Penstemon bolanius
Penstemon bolanus
Penstemon bracteatus (Red Canyon beardtongue) (Attributes)
Penstemon brandegeei
Penstemon breviculus (shortstem beardtongue) (Attributes)
Penstemon brevisepalus
Penstemon bryantae
Penstemon bryantiae (Bryant's beardtongue) (Attributes)
Penstemon buckleyi (buckley penstemon) (Attributes)
Penstemon caeruleus
Penstemon caesius (San Bernardino beardtongue) (Attributes)
Penstemon caespitosus (mat penstemon) (Attributes)
Penstemon calcareus (limestone beardtongue) (Attributes)
Penstemon californicus (California penstemon) (Attributes)
Penstemon calycosus (longsepal beardtongue) (Attributes)
Penstemon campanulatus (bellflower beardtongue) (Attributes)
Penstemon canescens (eastern gray beardtongue) (Attributes)
Penstemon cardinalis (cardinal beardtongue) (Attributes)
Penstemon cardwellii (Cardwell's beardtongue) (Attributes)
Penstemon carnosus (fleshy beardtongue) (Attributes)
Penstemon caryi (Cary's beardtongue) (Attributes)
Penstemon cedrosensis
Penstemon centranthifolius (scarlet bugler) (Attributes)
Penstemon chionophilus
Penstemon cinicola (ash penstemon) (Attributes)
Penstemon clevelandii (Cleveland's beardtongue) (Attributes)
Penstemon clutei (Sunset Crater beardtongue) (Attributes)
Penstemon cobaea (cobaea beardtongue) (Attributes)
Penstemon coccineus
Penstemon comarrhenus (dusty penstemon) (Attributes)
Penstemon compactus (compact penstemon) (Attributes)
Penstemon concinnus (Tunnel Springs beardtongue) (Attributes)
Penstemon confertus (yellow penstemon) (Attributes)
Penstemon confusus (Owens Valley penstemon) (Attributes)
Penstemon crandallii (Crandall's beardtongue) (Attributes)
Penstemon crideri (Crider penstemon) (Attributes)
Penstemon cusickii (Cusick's beardtongue) (Attributes)
Penstemon cyananthus (Wasatch beardtongue) (Attributes)
Penstemon cyaneus (blue penstemon) (Attributes)
Penstemon cyanocaulis (bluestem beardtongue) (Attributes)
Penstemon cyathophorus (sagebrush beardtongue) (Attributes)
Penstemon dasyphyllus (purple penstemon) (Attributes)
Penstemon davidsonii (Davidson's penstemon) (Attributes)
Penstemon deamii (Deam's beardtongue) (Attributes)
Penstemon deaveri (Mt. Graham beardtongue) (Attributes)
Penstemon debilis (Parachute beardtongue) (Attributes)
Penstemon degeneri (Degener's beardtongue) (Attributes)
Penstemon deustus (scabland penstemon) (Attributes)
Penstemon digitalis (Foxglove beardtongue) (Attributes)
Penstemon diphyllus (twoleaf beardtongue) (Attributes)
Penstemon discolor (Cataiina beardtongue) (Attributes)
Penstemon dissectus (dissected beardtongue) (Attributes)
Penstemon distans (Mt. Tumbull beardtongue) (Attributes)
Penstemon dolius (Jone's penstemon) (Attributes)
Penstemon dubius
Penstemon duchesnensis (Duchesne penstemon)
Penstemon dugesii
Penstemon eatonii (Eaton penstemon) (Attributes)
Penstemon elegantulus (rockvine penstemon) (Attributes)
Penstemon ellipticus (rocky ledge penstemon) (Attributes)
Penstemon eriantherus (fuzzytongue penstemon) (Attributes)
Penstemon euglaucus (glaucous beardtongue) (Attributes)
Penstemon eximius
Penstemon fasciculatus
Penstemon fendleri (fendler penstemon) (Attributes)
Penstemon filiformis (threadleaf beardtongue) (Attributes)
Penstemon filisepalis
Penstemon flavescens (high mountain penstemon) (Attributes)
Penstemon floribundus (Cordillia's penstemon) (Attributes)
Penstemon floridus (Panamint penstemon) (Attributes)
Penstemon flowersii (Flowers' beardtongue) (Attributes)
Penstemon frankliniae
Penstemon franklinii (Franklin's penstemon) (Attributes)
Penstemon fremontii (Fremont penstemon) (Attributes)
Penstemon fruticiformis (Death Valley penstemon) (Attributes)
Penstemon fruticosus (bush penstemon) (Attributes)
Penstemon gairdneri (Gairdner's beardtongue) (Attributes)
Penstemon galloensis
Penstemon gentianoides (gentian beardtongue)
Penstemon gentryi
Penstemon gibbensii (Gibbens' beardtongue) (Attributes)
Penstemon glaber (sawsepal penstemon) (Attributes)
Penstemon glandulosus (stickystem penstemon) (Attributes)
Penstemon glaucinus (blueleaf beardtongue) (Attributes)
Penstemon globosus (globe penstemon) (Attributes)
Penstemon gloxinioides
Penstemon goodrichii (Lapoint beardtongue) (Attributes)
Penstemon gormanii (Gorman's beardtongue) (Attributes)
Penstemon gracilentus (slender penstemon) (Attributes)
Penstemon gracilis (lilac penstemon) (Attributes)
Penstemon grahamii (Uinta Basin beardtongue) (Attributes)
Penstemon grandiflorus (largeflowered penstemon) (Attributes)
Penstemon griffinii (Griffin's beardtongue) (Attributes)
Penstemon grinnellii (Grinnell's beardtongue) (Attributes)
Penstemon guadalupensis (Guadalupe beardtongue) (Attributes)
Penstemon hallii (Hall's beardtongue) (Attributes)
Penstemon harbourii (Harbour's beardtongue) (Attributes)
Penstemon harringtonii (Harrington's beardtongue) (Attributes)
Penstemon hartwegii (Hartweg's beardtongue) (Attributes)
Penstemon havardii (Big Bend beardtongue) (Attributes)
Penstemon haydenii (blowout penstemon) (Attributes)
Penstemon henricksonii
Penstemon heterodoxus (Sierra beardtongue) (Attributes)
Penstemon heterophyllus (bunchleaf penstemon) (Attributes)
Penstemon hidalgensis
Penstemon hintonii
Penstemon hirsutus (hairy beardtongue) (Attributes)
Penstemon humilis (low beardtongue) (Attributes)
Penstemon hybr
Penstemon hybridus
Penstemon idahoensis (Idaho beardtongue) (Attributes)
Penstemon imberbis
Penstemon immanifestus (Steptoe Valley beardtongue) (Attributes)
Penstemon incertus (Mojave beardtongue) (Attributes)
Penstemon inflatus (inflated beardtongue) (Attributes)
Penstemon isophyllus
Penstemon jaliscensis
Penstemon jamesii (James' beardtongue) (Attributes)
Penstemon janishiae (Janish's penstemon) (Attributes)
Penstemon jonesii (Jones' penstemon) (Attributes)
Penstemon kingii (King's penstemon) (Attributes)
Penstemon kralii
Penstemon labrosus (San Gabriel beardtongue) (Attributes)
Penstemon laetus (mountain blue penstemon) (Attributes)
Penstemon laevigatus (eastern smooth beardtongue) (Attributes)
Penstemon laevis (southwestern beardtongue) (Attributes)
Penstemon lanceolatus (lanceleaf penstemon) (Attributes)
Penstemon laricifolius (larchleaf beardtongue) (Attributes)
Penstemon laxiflorus (nodding beardtongue) (Attributes)
Penstemon laxus (tufted penstemon) (Attributes)
Penstemon leiophyllus (smoothleaf beardtongue) (Attributes)
Penstemon lemhiensis (Lemhi penstemon) (Attributes)
Penstemon lentus (handsome penstemon) (Attributes)
Penstemon leonardii (Leonard's penstemon) (Attributes)
Penstemon leonensis
Penstemon linarioides (creeping penstemon) (Attributes)
Penstemon longiflorus (longflower penstemon) (Attributes)
Penstemon luculentus (Fremont's beardtongue)
Penstemon luteus
Penstemon lyalli (Lyall's beardtongue)
Penstemon marcusii (Marcus' beardtongue) (Attributes)
Penstemon mensarum (tiger beardtongue) (Attributes)
Penstemon menziesii
Penstemon metcalfei (Metcalfe's beardtongue)
Penstemon mexicanus
Penstemon miniatus
Penstemon minutifolius
Penstemon mirus (penstemon) (Attributes)
Penstemon miser (Malheur penstemon) (Attributes)
Penstemon moffattii (Moffatt's beardtongue)
Penstemon mohinoranus
Penstemon monoensis (Mono penstemon) (Attributes)
Penstemon montanus (cordroot beardtongue) (Attributes)
Penstemon moriahensis (Mt. Moriah beardtongue) (Attributes)
Penstemon moronensis
Penstemon mucronatus (Attributes)
Penstemon multiflorus (manyflower beardtongue) (Attributes)
Penstemon murrayanus (scarlet beardtongue) (Attributes)
Penstemon nanus (dwarf beardtongue) (Attributes)
Penstemon navajoa (Navajo Mountain beardtongue) (Attributes)
Penstemon neomexicanus (New Mexico beardtongue) (Attributes)
Penstemon neotericus (Plumas County beardtongue) (Attributes)
Penstemon newberryi (pride-of-the-mountains) (Attributes)
Penstemon nitidus (waxleaf penstemon) (Attributes)
Penstemon nudiflorus (Flagstaff beardtongue) (Attributes)
Penstemon occiduus
Penstemon oklahomensis (Oklahoma penstemon) (Attributes)
Penstemon oliganthus (Apache beardtongue) (Attributes)
Penstemon ophianthus (Arizona beardtongue) (Attributes)
Penstemon osterhoutii (Osterhout's beardtongue) (Attributes)
Penstemon ovatus (eggleaf beardtongue) (Attributes)
Penstemon pachyphyllus (thickleaf beardtongue) (Attributes)
Penstemon pahutensis (Pahute penstemon) (Attributes)
Penstemon pallidus (pale beardtongue) (Attributes)
Penstemon palmeri (Palmer penstemon) (Attributes)
Penstemon papillatus (Inyo beardtongue) (Attributes)
Penstemon parishii (Parish's penstemon) (Attributes)
Penstemon parryi (Parry's beardtongue) (Attributes)
Penstemon parvulus (Azure penstemon)
Penstemon parvus (Aquarius Plateau beardtongue) (Attributes)
Penstemon patens (Lone Pine beardtongue) (Attributes)
Penstemon payettensis (Payette beardtongue) (Attributes)
Penstemon paysoniorum (Payson's beardtongue) (Attributes)
Penstemon peckii (Peck's beardtongue) (Attributes)
Penstemon peirsonii
Penstemon penlandii (penland beardtongue) (Attributes)
Penstemon pennellianus (Blue Mountain beardtongue) (Attributes)
Penstemon perfoliatus
Penstemon perpulcher (Minidoka beardtongue) (Attributes)
Penstemon personatus (closethroat beardtongue) (Attributes)
Penstemon petiolatus (petiolate beardtongue) (Attributes)
Penstemon piliferus
Penstemon pinifolius (pineneedle beardtongue) (Attributes)
Penstemon pinorum (Pine Valley penstemon) (Attributes)
Penstemon plagapineus
Penstemon platyphyllus (broadleaf penstemon) (Attributes)
Penstemon potosinus
Penstemon pratensis (western whiteflower beardtongue) (Attributes)
Penstemon procerus (littleflower penstemon) (Attributes)
Penstemon pruinosus (Chilean beardtongue) (Attributes)
Penstemon pseudoparvus (Mt. Washington beardtongue)
Penstemon pseudoputus (Kaibab Plateau beardtongue) (Attributes)
Penstemon pseudospectabilis (desert penstemon) (Attributes)
Penstemon pudicus (Kawich Range beardtongue) (Attributes)
Penstemon pumilus (Salmon River beardtongue) (Attributes)
Penstemon punctatus
Penstemon purpusii (Snow Mountain beardtongue) (Attributes)
Penstemon putus (Black River beardtongue) (Attributes)
Penstemon radicosus (matroot penstemon) (Attributes)
Penstemon rattanii (Rattan's beardtongue) (Attributes)
Penstemon reidmoranii
Penstemon retrorsoides
Penstemon retrorsus (Adobe Hills beardtongue) (Attributes)
Penstemon rhizomatosus (Scheel Creek beardtongue) (Attributes)
Penstemon richardsonii (cutleaf beardtongue) (Attributes)
Penstemon roezlii (Roezl's penstemon) (Attributes)
Penstemon roseus
Penstemon rostriflorus (Bridge penstemon) (Attributes)
Penstemon rotundifolius
Penstemon rubicundus (Wassuck penstemon) (Attributes)
Penstemon rupicola (cliff beardtongue) (Attributes)
Penstemon rydbergii (Rydberg's penstemon) (Attributes)
Penstemon salmonensis
Penstemon saltarius
Penstemon saxosorum (upland beardtongue) (Attributes)
Penstemon scapoides (pinyon beardtongue) (Attributes)
Penstemon scariosus (White River beardtongue) (Attributes)
Penstemon schaffneri
Penstemon secundiflorus (sidebells penstemon) (Attributes)
Penstemon seorsus (shortlobe penstemon) (Attributes)
Penstemon sepalulus (littlecup beardtongue) (Attributes)
Penstemon serrulatus (serrulate penstemon) (Attributes)
Penstemon smallii (Small's beardtongue) (Attributes)
Penstemon spatulatus (Wallowa beardtongue) (Attributes)
Penstemon speciosus (royal penstemon) (Attributes)
Penstemon spectabilis (showy penstemon) (Attributes)
Penstemon stenophyllus (Sonoran beardtongue) (Attributes)
Penstemon stenosepalus
Penstemon stephensii (Stephens' penstemon) (Attributes)
Penstemon strictiformis (Mancos penstemon) (Attributes)
Penstemon strictus (Rocky Mountain beardtongue) (Attributes)
Penstemon subglaber (smooth penstemon) (Attributes)
Penstemon subserratus (finetooth beardtongue) (Attributes)
Penstemon subulatus (hackberry beardtongue) (Attributes)
Penstemon sudans (Susanville beardtongue) (Attributes)
Penstemon superbus (superb beardtongue) (Attributes)
Penstemon tenuiflorus (eastern whiteflower beardtongue) (Attributes)
Penstemon tenuifolius
Penstemon tenuis (sharpsepal beardtongue) (Attributes)
Penstemon tepicensis
Penstemon teucrioides (germander beardtongue) (Attributes)
Penstemon themisteri
Penstemon thompsoniae (Thompson penstemon) (Attributes)
Penstemon thurberi (Thurber penstemon) (Attributes)
Penstemon tidestromii (Tidestrom's beardtongue) (Attributes)
Penstemon tiehmii (Tiehm's beardtongue) (Attributes)
Penstemon tracyi (Trinity penstemon) (Attributes)
Penstemon triflorus (Heller's beardtongue) (Attributes)
Penstemon triphyllus (Riggin's penstemon) (Attributes)
Penstemon tubaeflorus
Penstemon tubiflorus (white wand beardtongue) (Attributes)
Penstemon uintahensis (Uinta Mountain beardtongue) (Attributes)
Penstemon unilateralis (oneside penstemon) (Attributes)
Penstemon utahensis (Utah penstemon) (Attributes)
Penstemon venustus (Venus penstemon) (Attributes)
Penstemon virens (Front Range beardtongue) (Attributes)
Penstemon virgatus (upright blue beardtongue) (Attributes)
Penstemon vizcainensis
Penstemon vulcanellus
Penstemon wardii (Ward's beardtongue) (Attributes)
Penstemon washingtonensis (Washington beardtongue) (Attributes)
Penstemon watsonii (Watson penstemon) (Attributes)
Penstemon wendtiorum
Penstemon whippleanus (dark beardtongue) (Attributes)
Penstemon wilcoxii (Wilcox's penstemon) (Attributes)
Penstemon wislizenii
Penstemon wrightii (Wright's beardtongue) (Attributes)
Penstemon xylus (Tushar Range beardtongue) (Attributes)
Penstemon yampaensis (Yampa beardtongue) (Attributes)