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Penstemon  Schmidel
Taxonomic Serial No.: 33665

(Download Help) Penstemon TSN 33665

 Taxonomy and Nomenclature
       
  Kingdom: Plantae  
  Taxonomic Rank: Genus  
  Synonym(s):    
  Common Name(s): penstémons [French]
  
    beardtongue [English]
  
       
  Taxonomic Status:    
  Current Standing: accepted  
       
  Data Quality Indicators:    
  Record Credibility Rating: verified - standards met  
  Global Species Completeness: partial   
  Latest Record Review: 2011   
       

 Taxonomic Hierarchy
       
 KingdomPlantae  – plantes, Planta, Vegetal, plants  
    SubkingdomViridiplantae  – green plants  
       InfrakingdomStreptophyta  – land plants  
          SuperdivisionEmbryophyta   
             DivisionTracheophyta  – vascular plants, tracheophytes  
                SubdivisionSpermatophytina  – spermatophytes, seed plants, phanérogames  
                   ClassMagnoliopsida   
                      SuperorderAsteranae   
                         OrderLamiales   
                            FamilyPlantaginaceae  – plantains  
                               GenusPenstemon Schmidel – penstémons, beardtongue  
    Direct Children:  
                                  Species Penstemon abietinus Pennell – firleaf beardtongue 
                                  Species Penstemon absarokensis Evert – Absaroka Range beardtongue, Absaroka beardtongue 
                                  Species Penstemon acaulis L.O. Williams – stemless beardtongue 
                                  Species Penstemon acuminatus Douglas ex Lindl. – sharpleaf penstemon, sand-dune beardtongue 
                                  Species Penstemon alamosensis Pennell & G.T. Nisbet – Los Alamos beardtongue, Alamo beardtongue 
                                  Species Penstemon albertinus Greene – Alberta beardtongue 
                                  Species Penstemon albidus Nutt. – white penstemon 
                                  Species Penstemon albomarginatus M.E. Jones – whitemargin beardtongue, white margin penstemon, whitemargin penstemon, white-margined penstemon 
                                  Species Penstemon ambiguus Torr. – gilia penstemon, bush penstemon, gilia beardtongue 
                                  Species Penstemon ammophilus N.H. Holmgren & L.M. Shultz – sandloving penstemon 
                                  Species Penstemon anguineus Eastw. – Siskiyou beardtongue 
                                  Species Penstemon angustifolius Nutt. ex Pursh – broadbeard beardtongue, broad-beard beardtongue, narrowleaf penstemon 
                                  Species Penstemon arenarius Greene – sanddune penstemon, Nevada sanddune beardtongue 
                                  Species Penstemon arenicola A. Nelson – sand penstemon 
                                  Species Penstemon aridus Rydb. – stiffleaf penstemon 
                                  Species Penstemon arkansanus Pennell – Arkansas beardtongue 
                                  Species Penstemon attenuatus Douglas ex Lindl. – sulphur penstemon 
                                  Species Penstemon atwoodii S.L. Welsh – Kaiparowits beardtongue 
                                  Species Penstemon auriberbis Pennell – Colorado beardtongue 
                                  Species Penstemon australis Small – Eustis Lake beardtongue 
                                  Species Penstemon azureus Benth. – azure penstemon 
                                  Species Penstemon baccharifolius Hook. – baccharisleaf beardtongue 
                                  Species Penstemon barbatus (Cav.) Roth – beardlip penstemon 
                                  Species Penstemon barnebyi N.H. Holmgren – Barneby's penstemon, White River Valley beardtongue 
                                  Species Penstemon barrettiae A. Gray – Barrett's beardtongue 
                                  Species Penstemon bicolor (Brandegee) Clokey & D.D. Keck – pinto beardtongue, pinto penstemon 
                                  Species Penstemon bracteatus D.D. Keck – Red Canyon beardtongue 
                                  Species Penstemon breviculus (D.D. Keck) G.T. Nisbet & R.C. Jacks. – shortstem penstemon, shortstem beardtongue 
                                  Species Penstemon brevisepalus Pennell  
                                  Species Penstemon X bryantiae D.D. Keck (pro. hybr.) – Bryant's beardtongue 
                                  Species Penstemon buckleyi Pennell – Buckley's penstemon, Buckley's beardtongue 
                                  Species Penstemon caesius A. Gray – San Bernardino beardtongue 
                                  Species Penstemon caespitosus Nutt. ex A. Gray – mat penstemon 
                                  Species Penstemon calcareus Brandegee – limestone beardtongue, limestone penstemon 
                                  Species Penstemon californicus (Munz & I.M. Johnst.) D.D. Keck – California penstemon 
                                  Species Penstemon calycosus Small – longsepal beardtongue 
                                  Species Penstemon campanulatus (Cav.) Willd. – bellflower beardtongue 
                                  Species Penstemon canescens (Britton) Britton – eastern gray beardtongue 
                                  Species Penstemon cardinalis Wooton & Standl. – cardinal beardtongue 
                                  Species Penstemon cardwellii Howell – Cardwell's beardtongue 
                                  Species Penstemon carnosus Pennell – fleshy beardtongue 
                                  Species Penstemon caryi Pennell – Cary's beardtongue, Cary beardtongue 
                                  Species Penstemon centranthifolius (Benth.) Benth. – scarlet bugler 
                                  Species Penstemon cinicola D.D. Keck – ash penstemon 
                                  Species Penstemon clevelandii A. Gray – Cleveland's beardtongue 
                                  Species Penstemon clutei A. Nelson – Sunset Crater beardtongue, Sunset Crater penstemon 
                                  Species Penstemon cobaea Nutt. – cobaea beardtongue, cobaea penstemon 
                                  Species Penstemon comarrhenus A. Gray – dusty penstemon, dusty beardtongue 
                                  Species Penstemon compactus (D.D. Keck) Crosswh. – compact penstemon, cache beardtongue 
                                  Species Penstemon concinnus D.D. Keck – Tunnel Springs beardtongue, Tunnel Springs penstemon 
                                  Species Penstemon confertus Douglas ex Lindl. – yellow penstemon 
                                  Species Penstemon confusus M.E. Jones – Owens Valley penstemon, Owens Valley beardtongue 
                                  Species Penstemon crandallii A. Nelson – Crandall's beardtongue 
                                  Species Penstemon X crideri A. Nelson (pro. sp.) – Crider's penstemon 
                                  Species Penstemon cusickii A. Gray – Cusick's beardtongue 
                                  Species Penstemon cyananthus Hook. – Wasatch beardtongue 
                                  Species Penstemon cyaneus Pennell – blue penstemon 
                                  Species Penstemon cyanocaulis Payson – bluestem beardtongue 
                                  Species Penstemon cyathophorus Rydb. – Northpark penstemon, sagebrush beardtongue 
                                  Species Penstemon dasyphyllus A. Gray – purple penstemon, Cochise beardtongue 
                                  Species Penstemon davidsonii Greene – timberline penstemon, Davidson's penstemon 
                                  Species Penstemon deamii Pennell – Deam's beardtongue 
                                  Species Penstemon deaveri Crosswh. – Mt. Graham beardtongue 
                                  Species Penstemon debilis O'Kane & J.L. Anderson – parachute beardtongue 
                                  Species Penstemon degeneri Crosswh. – Degener's beardtongue, Degener beardtongue 
                                  Species Penstemon deustus Douglas ex Lindl. – scabland penstemon 
                                  Species Penstemon digitalis Nutt. ex Sims – talus slope penstemon 
                                  Species Penstemon diphyllus Rydb. – twoleaf beardtongue 
                                  Species Penstemon discolor D.D. Keck – Catalina beardtongue 
                                  Species Penstemon dissectus Elliott – dissected beardtongue 
                                  Species Penstemon distans N.H. Holmgren – Mount Trumbull beardtongue 
                                  Species Penstemon dolius M.E. Jones ex Pennell – Jone's penstemon, Jones' beardtongue 
                                  Species Penstemon X dubius Davidson (pro. sp.) – dubius penstemon 
                                  Species Penstemon duchesnensis (N.H. Holmgren) Neese – Duchesne penstemon 
                                  Species Penstemon eatonii A. Gray – Eaton's penstemon, firecracker penstemon 
                                  Species Penstemon elegantulus Pennell – rockvine penstemon 
                                  Species Penstemon ellipticus J.M. Coult. & Fisher – rocky ledge penstemon 
                                  Species Penstemon eriantherus Pursh – fuzzytongue penstemon 
                                  Species Penstemon euglaucus English – glaucous beardtongue 
                                  Species Penstemon fendleri Torr. & A. Gray – Fendler's beardtongue, Fendler's penstemon 
                                  Species Penstemon filiformis (D.D. Keck) D.D. Keck – threadleaf beardtongue, thread-leaved penstemon 
                                  Species Penstemon flavescens Pennell – high mountain penstemon 
                                  Species Penstemon floribundus D. Danley – Cordelia beardtongue, Cordillia's beardtongue, Cordillia's penstemon 
                                  Species Penstemon floridus Brandegee – Panamint penstemon, Panamint beardtongue 
                                  Species Penstemon flowersii Neese & S.L. Welsh – Flowers' beardtongue 
                                  Species Penstemon franklinii S.L. Welsh – Franklin's penstemon, Ben Franklin's Beardtongue 
                                  Species Penstemon fremontii Torr. & A. Gray – Fremont's penstemon, Fremont's beardtongue 
                                  Species Penstemon fruticiformis Coville – Death Valley penstemon, Death Valley beardtongue 
                                  Species Penstemon fruticosus (Pursh) Greene – bush penstemon 
                                  Species Penstemon gairdneri Hook. – Gairdner's beardtongue 
                                  Species Penstemon gentianoides (Kunth) Poir. – gentian beardtongue 
                                  Species Penstemon gibbensii Dorn – Gibbens' beardtongue, Gibbens beardtongue 
                                  Species Penstemon glaber Pursh – western smooth beardtongue, sawsepal penstemon 
                                  Species Penstemon glandulosus Douglas – stickystem penstemon 
                                  Species Penstemon glaucinus Pennell – blueleaf beardtongue 
                                  Species Penstemon globosus (Piper) Pennell & D.D. Keck – globe penstemon 
                                  Species Penstemon goodrichii N.H. Holmgren – Lapoint beardtongue 
                                  Species Penstemon gormanii Greene – Gorman's beardtongue 
                                  Species Penstemon gracilentus A. Gray – slender penstemon 
                                  Species Penstemon gracilis Nutt. – slender penstemon, lilac penstemon, slender beardtongue 
                                  Species Penstemon grahamii D.D. Keck – Uinta Basin beardtongue, Graham's beardtongue 
                                  Species Penstemon grandiflorus Nutt. – largeflowered penstemon, large beardtongue 
                                  Species Penstemon griffinii A. Nelson – Griffin's beardtongue 
                                  Species Penstemon grinnellii Eastw. – Grinnell's beardtongue 
                                  Species Penstemon guadalupensis A. Heller – Guadalupe beardtongue 
                                  Species Penstemon hallii A. Gray – Hall's beardtongue 
                                  Species Penstemon harbourii A. Gray – Harbour's beardtongue 
                                  Species Penstemon harringtonii Penland – Harrington's beardtongue, Harrington beardtongue 
                                  Species Penstemon hartwegii Benth. – Hartweg's beardtongue 
                                  Species Penstemon havardii A. Gray – Big Bend beardtongue 
                                  Species Penstemon haydenii S. Watson – blowout penstemon, blowout beardtongue 
                                  Species Penstemon heterodoxus A. Gray – Sierra penstemon, Sierra beardtongue 
                                  Species Penstemon heterophyllus Lindl. – bunchleaf penstemon 
                                  Species Penstemon hirsutus (L.) Willd. – hairy beardtongue 
                                  Species Penstemon humilis Nutt. ex A. Gray – low penstemon, low beardtongue 
                                  Species Penstemon idahoensis N.D. Atwood & S.L. Welsh – Idaho beardtongue 
                                  Species Penstemon immanifestus N.H. Holmgren – Steptoe Valley penstemon, Steptoe Valley beardtongue 
                                  Species Penstemon incertus Brandegee – Mojave beardtongue 
                                  Species Penstemon inflatus Crosswh. – inflated beardtongue 
                                  Species Penstemon jamesii Benth. – James' penstemon, James' beardtongue 
                                  Species Penstemon janishiae N.H. Holmgren – Janish's penstemon, Antelope Valley beardtongue 
                                  Species Penstemon X jonesii Pennell (pro. sp.) – Jones' penstemon 
                                  Species Penstemon kingii S. Watson – King's penstemon, King's beardtongue 
                                  Species Penstemon labrosus (A. Gray) Mast. ex Hook. f. – San Gabriel beardtongue 
                                  Species Penstemon laetus A. Gray – mountain blue penstemon 
                                  Species Penstemon laevigatus Aiton – eastern smooth beardtongue 
                                  Species Penstemon laevis Pennell – southwestern penstemon, southwestern beardtongue 
                                  Species Penstemon lanceolatus Benth. – lanceleaf beardtongue 
                                  Species Penstemon laricifolius Hook. & Arn. – larchleaf beardtongue 
                                  Species Penstemon laxiflorus Pennell – nodding beardtongue 
                                  Species Penstemon laxus A. Nelson – tufted penstemon 
                                  Species Penstemon leiophyllus Pennell – smoothleaf penstemon, smoothleaf beardtongue 
                                  Species Penstemon lemhiensis (D.D. Keck) D.D. Keck & Cronquist – Lemhi penstemon, Lemhi beardtongue 
                                  Species Penstemon lentus Pennell – handsome penstemon, handsome beardtongue 
                                  Species Penstemon leonardii Rydb. – Leonard's penstemon, Leonard's beardtongue 
                                  Species Penstemon linarioides A. Gray – creeping penstemon, toadflax penstemon 
                                  Species Penstemon longiflorus (Pennell) S.L. Clark – longflower penstemon 
                                  Species Penstemon lyallii A. Gray – Lyall's beardtongue 
                                  Species Penstemon marcusii (D.D. Keck) N.H. Holmgren – Marcus' beardtongue, Jones' beardtongue 
                                  Species Penstemon mensarum Pennell – tiger beardtongue 
                                  Species Penstemon metcalfei Wooton & Standl. – Metcalfe's beardtongue 
                                  Species Penstemon X mirus A. Nelson (pro. sp.) – bush penstemon 
                                  Species Penstemon miser A. Gray – Malheur penstemon 
                                  Species Penstemon moffatii Eastw. – Moffatt's beardtongue 
                                  Species Penstemon monoensis A. Heller – Mono penstemon 
                                  Species Penstemon montanus Greene – cordroot beardtongue 
                                  Species Penstemon moriahensis N.H. Holmgren – Mount Moriah penstemon, Mt. Moriah beardtongue 
                                  Species Penstemon mucronatus N.H. Holmgren – Sheep Creek beardtongue, mucronate penstemon 
                                  Species Penstemon multiflorus (Benth) Chapm. ex Small – manyflower beardtongue 
                                  Species Penstemon murrayanus Hook. – scarlet beardtongue 
                                  Species Penstemon nanus D.D. Keck – dwarf beardtongue, low beardtongue 
                                  Species Penstemon navajoa N.H. Holmgren – Navajo Mountain beardtongue 
                                  Species Penstemon neomexicanus Wooton & Standl. – New Mexico beardtongue 
                                  Species Penstemon neotericus D.D. Keck – Plumas County beardtongue 
                                  Species Penstemon newberryi A. Gray – pride-of-the-mountains, mountain pride 
                                  Species Penstemon nitidus Douglas ex Benth. – waxleaf penstemon 
                                  Species Penstemon nudiflorus A. Gray – Flagstaff beardtongue 
                                  Species Penstemon oklahomensis Pennell – Oklahoma penstemon, Oklahoma beardtongue 
                                  Species Penstemon oliganthus Wooton & Standl. – Apache beardtongue 
                                  Species Penstemon ophianthus Pennell – coiled anther penstemon, Arizona beardtongue 
                                  Species Penstemon osterhoutii Pennell – Osterhout's beardtongue 
                                  Species Penstemon ovatus Douglas ex Hook. – eggleaf beardtongue 
                                  Species Penstemon pachyphyllus A. Gray ex Rydb. – thickleaf penstemon, thickleaf beardtongue 
                                  Species Penstemon pahutensis N.H. Holmgren – Pahute penstemon, Paiute beardtongue 
                                  Species Penstemon pallidus Small – pale beardtongue 
                                  Species Penstemon palmeri A. Gray – Palmer's penstemon 
                                  Species Penstemon papillatus J.T. Howell – Inyo beardtongue, Inyo penstemon 
                                  Species Penstemon X parishii A. Gray (pro. sp.) – Parish's penstemon 
                                  Species Penstemon parryi (A. Gray) A. Gray – Parry's penstemon, Parry's beardtongue 
                                  Species Penstemon parvulus (A. Gray) Krautter – azure penstemon 
                                  Species Penstemon parvus Pennell – Aquarius Plateau beardtongue, small beardtongue 
                                  Species Penstemon patens (M.E. Jones) N.H. Holmgren – Lone Pine penstemon, Lone Pine beardtongue 
                                  Species Penstemon payettensis A. Nelson & J.F. Macbr. – Payette beardtongue 
                                  Species Penstemon paysoniorum D.D. Keck – Payson's beardtongue, Payson beardtongue 
                                  Species Penstemon peckii Pennell – Peck's beardtongue 
                                  Species Penstemon X peirsonii Munz & I.M. Johnst. (pro. sp.) – Peirson's penstemon 
                                  Species Penstemon penlandii W.A. Weber – Penland's beardtongue, Penland beardtongue 
                                  Species Penstemon pennellianus D.D. Keck – Blue Mountain beardtongue 
                                  Species Penstemon perpulcher A. Nelson – Minidoka beardtongue 
                                  Species Penstemon personatus D.D. Keck – closethroat beardtongue, closed-lip beardtongue 
                                  Species Penstemon petiolatus Brandegee – lime penstemon, petiolate beardtongue 
                                  Species Penstemon pinifolius Greene – pineneedle penstemon, pineneedle beardtongue 
                                  Species Penstemon pinorum L.M. Shultz & J.S. Shultz – Pine Valley penstemon 
                                  Species Penstemon platyphyllus Rydb. – broadleaf penstemon, broadleaf beardtongue 
                                  Species Penstemon pratensis Greene – western whiteflower penstemon, western whiteflower beardtongue 
                                  Species Penstemon procerus Douglas ex Graham – pincushion beardtongue, littleflower penstemon 
                                  Species Penstemon pruinosus Douglas ex Lindl. – Chilean beardtongue, Chelan beardtongue 
                                  Species Penstemon pseudoputus (Crosswh.) N.H. Holmgren – Kaibab Plateau beardtongue 
                                  Species Penstemon pseudospectabilis M.E. Jones – desert penstemon 
                                  Species Penstemon pudicus Reveal & Beatley – bashful penstemon, Kawich Range beardtongue 
                                  Species Penstemon pumilus Nutt. – Salmon River beardtongue 
                                  Species Penstemon purpusii Brandegee – Snow Mountain beardtongue 
                                  Species Penstemon putus A. Nelson – Black River beardtongue 
                                  Species Penstemon radicosus A. Nelson – matroot penstemon 
                                  Species Penstemon rattanii A. Gray – Rattan's beardtongue 
                                  Species Penstemon retrorsus Payson ex Pennell – Adobe Hills beardtongue 
                                  Species Penstemon rhizomatosus N.H. Holmgren – Scheel Creek beardtongue 
                                  Species Penstemon richardsonii Douglas ex Lindl. – cutleaf beardtongue 
                                  Species Penstemon roezlii Regel – Roezl's penstemon 
                                  Species Penstemon rostriflorus Kellogg – Bridges' penstemon, beaked beardtongue, beakflower penstemon 
                                  Species Penstemon rubicundus D.D. Keck – Wassuck penstemon, Wassuk Range beardtongue 
                                  Species Penstemon rupicola (Piper) Howell – cliff beardtongue 
                                  Species Penstemon rydbergii A. Nelson – meadow beardtongue, Rydberg's penstemon 
                                  Species Penstemon saxosorum Pennell – upland beardtongue 
                                  Species Penstemon scapoides D.D. Keck – pinyon beardtongue 
                                  Species Penstemon scariosus Pennell – White River beardtongue 
                                  Species Penstemon secundiflorus Benth. – sidebells penstemon 
                                  Species Penstemon seorsus (A. Nelson) D.D. Keck – shortlobe penstemon 
                                  Species Penstemon sepalulus A. Nelson – littlecup beardtongue 
                                  Species Penstemon serrulatus Menzies ex Rees – serrulate penstemon 
                                  Species Penstemon smallii A. Heller – Small's beardtongue 
                                  Species Penstemon spatulatus Pennell – Wallowa beardtongue 
                                  Species Penstemon speciosus Douglas ex Lindl. – prairie-clover, royal penstemon 
                                  Species Penstemon spectabilis Thurb. ex A. Gray – showy penstemon 
                                  Species Penstemon stenophyllus A. Gray – Sonoran beardtongue 
                                  Species Penstemon stephensii Brandegee – Stephens' penstemon, Stephens' beardtongue 
                                  Species Penstemon strictiformis Rydb. – stiff penstemon, Mancos penstemon 
                                  Species Penstemon strictus Benth. – Rocky Mountain beardtongue, Rocky Mountain penstemon 
                                  Species Penstemon subglaber Rydb. – smooth penstemon 
                                  Species Penstemon subserratus Pennell – finetooth beardtongue 
                                  Species Penstemon subulatus M.E. Jones – hackberry beardtongue 
                                  Species Penstemon sudans M.E. Jones – Susanville beardtongue, Susanville penstemon 
                                  Species Penstemon superbus A. Nelson – superb beardtongue 
                                  Species Penstemon tenuiflorus Pennell – eastern whiteflower beardtongue 
                                  Species Penstemon tenuis Small – sharpsepal beardtongue 
                                  Species Penstemon teucrioides Greene – germander beardtongue 
                                  Species Penstemon thompsoniae (A. Gray) Rydb. – Thompson's penstemon, Thompson's beardtongue 
                                  Species Penstemon thurberi Torr. – Thurber's penstemon 
                                  Species Penstemon tidestromii Pennell – Tidestrom's beardtongue, Tidestrom beardtongue 
                                  Species Penstemon tiehmii N.H. Holmgren – Tiehm's beardtongue 
                                  Species Penstemon tracyi D.D. Keck – Trinity penstemon, Tracy beardtongue 
                                  Species Penstemon triflorus A. Heller – Heller's beardtongue 
                                  Species Penstemon triphyllus Douglas ex Lindl. – Riggin's penstemon 
                                  Species Penstemon tubiflorus Nutt. – white wand beardtongue 
                                  Species Penstemon tusharensis N.H. Holmgren – Tushar Range beardtongue 
                                  Species Penstemon uintahensis Pennell – Uinta Mountain beardtongue, Uintah beardtongue 
                                  Species Penstemon utahensis Eastw. – Utah penstemon 
                                  Species Penstemon venustus Douglas ex Lindl. – Venus penstemon 
                                  Species Penstemon versicolor Pennell – variable-color beardtongue 
                                  Species Penstemon virens Pennell ex Rydb. – Front Range beardtongue 
                                  Species Penstemon virgatus A. Gray – upright blue beardtongue 
                                  Species Penstemon wardii A. Gray – Ward's beardtongue, Ward beardtongue 
                                  Species Penstemon washingtonensis D.D. Keck – Washington beardtongue 
                                  Species Penstemon watsonii A. Gray – Watson's beardtongue, Watson's penstemon 
                                  Species Penstemon whippleanus A. Gray – dark beardtongue, Whipple's penstemon 
                                  Species Penstemon wilcoxii Rydb. – Wilcox's penstemon 
                                  Species Penstemon wrightii Hook. – Wright's beardtongue 
                                  Species Penstemon yampaensis Penland – Yampa beardtongue 
       

 References
       
  Expert(s):    
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  Other Source(s):    
  Source: ITIS*ca, website (version 2002)  
  Acquired: 2003   
  Notes:    
  Reference for: penstémons[French]   
       
  Source: Lamiales of North America Update, database (version 2011)  
  Acquired: 2011   
  Notes: Updated for ITIS by the Flora of North America Expertise Network, in connection with an update for USDA PLANTS (2007-2010)   
  Reference for: Penstemon   
       
  Source: NODC Taxonomic Code, database (version 8.0)  
  Acquired: 1996   
  Notes:    
  Reference for: Penstemon   
       
  Source: The PLANTS Database, database (version 4.0.4)  
  Acquired: 1996   
  Notes: National Plant Data Center, NRCS, USDA. Baton Rouge, LA 70874-4490 USA. http://plants.usda.gov   
  Reference for: Penstemon   
       
  Source: The PLANTS Database, database (version 5.1.1)  
  Acquired: 2000   
  Notes: National Plant Data Center, NRCS, USDA. Baton Rouge, LA 70874-4490 USA. http://plants.usda.gov   
  Reference for: Penstemon   
       
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Disclaimer: ITIS taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. However, it is not a legal authority for statutory or regulatory purposes. While every effort has been made to provide the most reliable and up-to-date information available, ultimate legal requirements with respect to species are contained in provisions of treaties to which the United States is a party, wildlife statutes, regulations, and any applicable notices that have been published in the Federal Register. For further information on U.S. legal requirements with respect to protected taxa, please contact the U.S. Fish and Wildlife Service.

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