List of Penstemon species

Last updated

This is a list of the species in the genus Penstemon . They are commonly called penstemons or beardtongues in English, and species will often have a common name based on both of these names. As the subgenuses have some taxonomic uncertainty, the species are arranged alphabetically by name in the lists. As of 2024 there are 281 species and seven natural hybrids, according to Plants of the World Online (POWO). [1] The database World Flora Online (WFO) regards all the species listed by POWO as valid, but additionally lists two natural hybrids as species and five additional species as valid. [2]

Contents

Penstemon species

These 281 species of Penstemon are considered valid by both WFO and POWO, with the exception of Penstemon grandiflorus . [1] [2] In both POWO and WFO, it is regarded as a synonym of Penstemon bradburyi. However, P. grandiflorus continues to be widely used as the correct species name in North America, including by the Flora of North America and the USDA Natural Resources Conservation Service PLANTS database (PLANTS). [3] [4] It is listed as P. grandiflorus in the table with the synonym noted.

Scientific name
Authority
Common namesPhoto
Penstemon abietinus
Pennell
Firleaf beardtongue Penstemon abietinus - andrey zharkikh 01.jpg
Penstemon absarokensis
Evert
Absaroka Range beardtongue
Penstemon acaulis
L.O.Williams
stemless penstemon Penstemon acaulis - Andrey Zharkikh 01.jpg
Penstemon acuminatus
Douglas ex Lindl.
sharpleaf penstemon Penstemon acuminatus - Matt Berger 01s.jpg
Penstemon alamosensis
Pennell & G.T.Nisbet
Los Alamos beardtongue Penstemon alamosensis - Craig Martin 03.jpg
Penstemon albertinus
Greene
Alberta beardtongue Penstemon albertinus - Alberta beardtongue - 53060199001.jpg
Penstemon albidus
Nutt.
white penstemon Penstemon albidus - Jeff D Hansen 01.jpg
Penstemon albifluvis
England
White River penstemon Penstemon albifluvis - My-Lan Le 04.jpg
Penstemon albomarginatus
M.E.Jones
white-margined penstemon Penstemon albomarginatus - Matt Berger 03.jpg
Penstemon ambiguus
Torr.

bush penstemon
gilia beardtongue
gilia penstemon

Penstemon ambiguus var laevissimus 12.jpg
Penstemon ammophilus
N.H.Holmgren & L.M.Schultz
sandloving penstemon
Penstemon amphorellae
Crosswh.
Penstemon amphorellae - Jose Belem Hernandez Diaz 05.jpg
Penstemon angelicus
(I.M.Johnst.) Moran
Penstemon anguineus
Eastw.
Siskiyou penstemon Penstemon anguineus.jpeg
Penstemon angustifolius
Nutt. ex Pursh

broadbeard beardtongue
narrowleaf penstemon

Penstemon angustifolius - Craig Martin 01.jpg
Penstemon arenarius
Greene

Nevada sanddune beardtongue
sanddune penstemon

Penstemon arenarius - Matt Berger 04.jpg
Penstemon arenicola
A.Nelson
sand penstemon Penstemon arenicola - P Holroyd 01.jpg
Penstemon aridus
Rydb.
stiffleaf penstemon Penstemon aridus - stiff-leaf beardtongue.jpg
Penstemon arkansanus
Pennell
Arkansas beardtongue Penstemon arkansanus.jpg
Penstemon atropurpureus
(Sweet) G.Don
Penstemon attenuatus
Douglas
sulphur penstemon Penstemon attenuatus3.jpg
Penstemon atwoodii
S.L.Welsh
Kaiparowits beardtongue Penstemon atwoodii - Darrin Gobble 15.jpg
Penstemon auriberbis
Pennell
Colorado penstemon Penstemon auriberbis S01.jpg
Penstemon australis
Small
Eustis Lake beardtongue Penstemon australis - John Kees 02.jpg
Penstemon azureus
Benth.
azure penstemon Penstemon azureus in Jardin botanique de la Charme 01.jpg
Penstemon baccharifolius
Hook.
baccharisleaf beardtongue Penstemon baccharifolius.jpg
Penstemon barbatus
(Cav.) Roth

Golden-beard Penstemon
Beardlip penstemon

Penstemon barbatus kz01.jpg
Penstemon barnebyi
N.H.Holmgren

Barneby's penstemon
White River Valley beardtongue

Penstemon barnebyi - Matt Berger 01.jpg
Penstemon barrettiae
A.Gray
Barrett's beardtongue Penstemon barrettiae (Scrophulariaceae) flower.JPG
Penstemon bicolor
(Brandegee) Clokey & D.D.Keck

pinto beardtongue
pinto penstemon

Penstemon bicolor 9.jpg
Penstemon bleaklyi
O'Kane & K.D.Heil
bleakly penstemon Penstemon bleaklyi - Patrick Alexander 02.jpg
Penstemon bolanius
Straw
Penstemon bracteatus
D.D.Keck
Red Canyon beardtongue
Penstemon breviculus
(D.D.Keck) G.T.Nisbet & R.C.Jacks.

shortstem beardtongue
shortstem penstemon

Penstemon breviculus - Flickr - aspidoscelis (1).jpg
Penstemon brevisepalus
Pennell
short-sepaled beardtongue Penstemon brevisepalus.jpg
Penstemon buckleyi
Pennell

buckley penstemon
Buckley's beardtongue

Penstemon buckleyi - henrya 01.jpg
Penstemon caesius
A.Gray
San Bernardino beardtongue Penstemon caesius - Matthew Mosher 03.jpg
Penstemon caespitosus
Nutt. ex A.Gray
mat penstemon Penstemon caespitosus - Cecelia Alexander 01.jpg
Penstemon calcareus
Brandegee
limestone beardtongue Penstemon calcareus - Steve Matson 01.jpg
Penstemon californicus
(Munz & I.M.Johnst.) D.D.Keck
California penstemon Penstemon californicus - Matt Berger 01.jpg
Penstemon calycosus
Small
longsepal beardtongue Addisonia - colored illustrations and popular descriptions of plants (1916-(1964)) (16152836383).jpg
Penstemon campanulatus
(Cav.) Willd.
bellflower beardtongue Penstemon campanulatus kz02.jpg
Penstemon canescens
Britton
eastern gray beardtongue Eastern Gray Beardtongue in the evening sun - Flickr - treegrow.jpg
Penstemon cardinalis
Wooton & Standl.
cardinal beardtongue Cardinal Beardtongue (51202746108).jpg
Penstemon cardwellii
Howell
Cardwell's beardtongue USFWS penstemon cardwellii (23535137030).jpg
Penstemon carnosus
Pennell
fleshy beardtongue
Penstemon caryi
Pennell
Cary's beardtongue Penstemon caryi lg.jpg
Penstemon cedrosensis
Krautter
Cedros Island penstemon
Penstemon centranthifolius
(Benth.) Benth.
scarlet bugler Edwards' botanical register, or, Ornamental flower-garden and shrubbery .. (1829-1847) (20550182324).jpg
Penstemon cinicola
D.D.Keck
ash penstemon
Penstemon clevelandii
A.Gray
Cleveland's beardtongue Penstemonclevelandii.jpg
Penstemon clutei
A.Nelson

Sunset Crater beardtongue
Sunset Crater penstemon

Penstemon clutei2.jpg
Penstemon cobaea
Nutt.

cobaea beardtongue
cobaea penstemon

Penstemon cobaea.jpg
Penstemon comarrhenus
A.Gray

dusty beardtongue
dusty penstemon

20180620 GGIGardens MordecaiChildrens DSCN0134.jpg
Penstemon concinnus
D.D.Keck

Tunnel Springs beardtongue
Tunnel Springs penstemon

Penstemon confertus
Douglas
yellow penstemon Penstemon confertus near Squilchuck State Park Chelan County Washington 1.jpg
Penstemon confusus
M.E.Jones

Owens Valley beardtongue
Owens Valley penstemon

2015.05.16 07.25.43 IMG 2240 - Flickr - andrey zharkikh.jpg
Penstemon crandallii
A.Nelson
Crandall's penstemon Penstemon crandallii - Cecelia Alexander 03.jpg
Penstemon curtiflorus
(D.D.Keck) N.H.Holmgren
Penstemon cusickii
A.Gray
Cusick's beardtongue Penstemon cusickii closeup-6-08-04.jpg
Penstemon cyananthus
Hook.
Wasatch beardtongue Penstemon cyananthus, Grizzly Gulch, Little Cottonwood Canyon, Utah.jpg
Penstemon cyaneus
Pennell
blue penstemon Penstemon cyaneus NRCS-001.jpg
Penstemon cyanocaulis
Payson
bluestem beardtongue 2015.05.08 15.27.34 IMG 2024 - Flickr - andrey zharkikh.jpg
Penstemon cyathophorus
Rydb.

cupped penstemon
Middle Park penstemon

Penstemon cyathophorus - Anders Hastings 03.jpg
Penstemon dasyphyllus
A.Gray

Cochise beardtongue
purple penstemon

Penstemon davidsonii
Greene

Davidson's penstemon
timberline penstemon

Penstemon davidsonii 0092.JPG
Penstemon deamii
Pennell
Deam's beardtongue
Penstemon deaveri
Crosswh.
Mt. Graham beardtongue Penstemon deaveri - Flickr - aspidoscelis (1).jpg
Penstemon debilis
O'Kane & J.L.Anderson
Parachute beardtongue Close up of dark green leaves and white flowers.jpg
Penstemon degeneri
Crosswh.
Degener's beardtongue Penstemon degeneri lg.jpg
Penstemon deustus
Douglas ex Lindl.
scabland penstemon Penstemon deustus-6-22-04.jpg
Penstemon digitalis
Nutt. ex Sims

talus slope penstemon
foxglove beardtongue

Penstemon digitalis 15-p.bot-pens.digita-07.jpg
Penstemon diphyllus
Rydb.
twoleaf beardtongue
Penstemon discolor
D.D.Keck
Catalina beardtongue
Penstemon dissectus
Elliott
dissected beardtongue Penstemon dissectus - Tia Tyler 02.jpg
Penstemon distans
N.H.Holmgren
Mt. Tumbull beardtongue
Penstemon dolius
M.E.Jones

Jones's penstemon
Jones' beardtongue

Penstemon dolius var. dolius - Matt Berger 01.jpg
Penstemon dugesii
Pérez-Calix & Zacarías
Penstemon duchesnensis
(N.H.Holmgren) Neese
Duchesne penstemon Duchesne penstemon close-up 1.jpg
Penstemon eatonii
A.Gray

Eaton's penstemon
firecracker penstemon

Penstemon eatonii 6.jpg
Penstemon elegantulus
Pennell
rockvine penstemon
Penstemon ellipticus
J.M.Coult. & Fisher

eggleaf penstemon
rocky ledge penstemon

Penstemon ellipticus J01.jpg
Penstemon eriantherus
Nutt. ex Pursh
fuzzytongue penstemon Prairie Pentstemon (Pentstemon erianthera)-saam 1970.355.390.jpg
Penstemon euglaucus
English
glaucous beardtongue Penstemon euglaucus-IMG 7135.jpg
Penstemon eximius
D.D.Keck

extrodinary penstemon
unusual beardtongue

Penstemon fasciculatus
A.Gray
Penstemon fendleri
Torr. & A.Gray
fendler penstemon Penstemon fendleri - Flickr - aspidoscelis (2).jpg
Penstemon filiformis
(D.D.Keck) D.D.Keck
threadleaf beardtongue Penstemon filiformis 1.jpg
Penstemon filisepalis
Straw
Penstemon flavescens
Pennell
high mountain penstemon
Penstemon floribundus
Danley
Cordillia's penstemon
Penstemon floridus
Brandegee

Panamint beardtongue
Panamint penstemon

Penstemon floridus H12.jpg
Penstemon flowersii
Neese & S.L.Welsh
Flowers' beardtongue Penstemon flowersii S01.jpg
Penstemon franklinii
S.L.Welsh
Franklin's penstemon
Penstemon fremontii
Torr. & A.Gray
Fremont penstemon 2015.05.24 12.57.06 IMG 2355 - Flickr - andrey zharkikh.jpg
Penstemon fruticiformis
Coville
Death Valley penstemon Penstemon fruticiformis B01.jpg
Penstemon fruticosus
(Pursh) Greene
Greene bush penstemon Penstemon fruticosus var. fruticosus 1.jpg
Penstemon gairdneri
Hook.
Gairdner's beardtongue Penstemon gairdneri 9248.JPG
Penstemon galloensis
G.L.Nesom
Penstemon gentianoides
(Kunth) Poir.
gentian penstemon Penstemon gentianoides K01.jpg
Penstemon gentryi
Standl.
Penstemon gibbensii
Dorn
Gibbens' beardtongue Penstemon gibbensii.jpg
Penstemon glaber
Pursh
sawsepal penstemon Penstemon glaber - 52221674095.jpg
Penstemon glandulosus
Douglas ex Lindl.
stickystem penstemon Penstemon glandulosus-5-25-05.jpg
Penstemon glaucinus
Pennell
blueleaf beardtongue
Penstemon globosus
(Piper) Pennell & D.D.Keck
globe penstemon Penstemon globosus W01.jpg
Penstemon goodrichii
N.H.Holmgren
Lapoint penstemon 2017.06.03 13.50.09 IMG 0232 - Flickr - andrey zharkikh.jpg
Penstemon gormanii
Greene
Gorman's beardtongue Penstemon gormanii B01.jpg
Penstemon gracilentus
A.Gray
slender penstemon Penstemon gracilentus H04.jpg
Penstemon gracilis
Nutt.

lilac penstemon
slender penstemon

Penstemon gracilis4.jpg

Penstemon grandiflorus
Nutt.
Penstemon bradburyi
Pursh

large flower penstemon
shell-leaf penstemon

Penstemon grandiflorus - Tom Scavo 01.jpg
Penstemon grahamii
D.D.Keck
Uinta Basin beardtongue Penstemon grahamii 1.jpg
Penstemon griffinii
A.Nelson
Griffin's beardtongue
Penstemon grinnellii
Eastw.
Grinnell's beardtongue Penstemon grinnellii var. scrophularioides - Flickr - aspidoscelis.jpg
Penstemon guadalupensis
A.Heller
Guadalupe beardtongue
Penstemon hallii
A.Gray
Hall's beardtongue Penstemon hallii - Flickr - aspidoscelis.jpg
Penstemon harbourii
A.Gray
Harbour's beardtongue
Penstemon harringtonii
Penland
Harrington's beardtongue
Penstemon hartwegii
Benth.
Hartweg's beardtongue Plantaginaceae - Penstemon hartwegii.jpg
Penstemon havardii
A.Gray
Big Bend beardtongue
Penstemon haydenii
S.Watson ex J.M.Coult.

blowout beardtongue
blowout penstemon

Penstemon haydenni 01.jpg
Penstemon henricksonii
Straw
Penstemon hesperius
M.E.Peck
tall western penstemon
Penstemon heterodoxus
A.Gray

Sierra beardtongue
Sierra penstemon

Penstemon heterodoxus whorled penstemon.jpg
Penstemon heterophyllus
Lindl.
bunchleaf penstemon Penstemonheterophyllus0.jpg
Penstemon hidalgensis
Straw
Penstemon hirsutus
(L.) Willd.
hairy beardtongue Penstemon hirsutus Penstemon kosmaty 2023-06-08 01.jpg
Penstemon humilis
Nutt. ex A.Gray

low beardtongue
low penstemon

Penstemon humilis.jpg
Penstemon idahoensis
N.D.Atwood & S.L.Welsh
Idaho penstemon
Penstemon imberbis
(Kunth) Trautv.
Penstemon immanifestus
N.H.Holmgren

Steptoe Valley beardtongue
Steptoe Valley penstemon

Penstemon incertus
Brandegee
Mojave beardtongue Penstemon incertus B02.jpg
Penstemon inflatus
Crosswh.
inflated beardtongue Penstemon inflatus inflorescence.jpg
Penstemon isophyllus
B.L.Rob.
equal-leaved penstemon Penstemon isophyllus A03.jpg
Penstemon jamesii
Benth.

James penstemon
James' beardtongue

Penstemon jamesii - Craig Martin 06.jpg
Penstemon janishiae
N.H.Holmgren

Antelope Valley beardtongue
Janish's penstemon

Penstemonjanishiae1.jpg
Penstemon kingii
S.Watson

King's beardtongue
King's penstemon

Penstemon kingii - Matt Berger 01.jpg
Penstemon kralii
D.Estes
Penstemon labrosus
(A.Gray) Mast. ex Hook.f.
San Gabriel beardtongue Penstemon labrosus - Alex Heyman 04.jpg
Penstemon laetus
A.Gray
mountain blue penstemon Penstemon laetus - Alex Heyman 01.jpg
Penstemon laevigatus
Aiton
eastern smooth beardtongue Penstemon laevigatus - Becky Dill 01.jpg
Penstemon laevis
Pennell

southwestern beardtongue
southwestern penstemon

Penstemon laevis - Arvel Hernandez 01.jpg
Penstemon lanceolatus
Benth.
lanceleaf penstemon Penstemon lanceolatus - Patrick Alexander 01.jpg
Penstemon laricifolius
Hook. & Arn.
larchleaf beardtongue Penstemon laricifolius - Patrick Alexander 01.jpg
Penstemon laxiflorus
Pennell
nodding beardtongue Penstemon laxiflorus - John Kees 03.jpg
Penstemon laxus
A.Nelson
tufted penstemon
Penstemon leiophyllus
Pennell

smoothleaf beardtongue
smoothleaf penstemon

Penstemon leiophyllus - Darrin Gobble 05.jpg
Penstemon lemhiensis
(D.D.Keck) D.D.Keck & Cronquist
Lemhi penstemon
Penstemon lentus
Pennell

handsome beardtongue
handsome penstemon

Penstemon lentus - Robb Hannawacker 01.jpg
Penstemon leonardii
Rydb.

Leonard's beardtongue
Leonard's penstemon

Penstemon leonardii - Matt Berger 01.jpg
Penstemon leonensis
Straw
Penstemon leonensis - Jose Belem Hernandez Diaz 01.jpg
Penstemon linarioides
A.Gray

creeping penstemon
toadflax penstemon

Penstemon linarioides - loganjlbradley 01.jpg
Penstemon longiflorus
(Pennell) S.L.Clark
longflower penstemon
Penstemon luteus
G.L.Nesom
Penstemon lyallii
(A.Gray) A.Gray
Lyall's beardtongue Penstemon lyallii - Matt Berger 01.jpg
Penstemon marcusii
(D.D.Keck) N.H.Holmgren
Marcus' beardtongue
Penstemon mensarum
Pennell
tiger beardtongue Penstemon mensarum - John Powers 02.jpg
Penstemon metcalfei
Wooton & Standl.
Metcalfe's beardtongue
Penstemon miniatus
Lindl.
Penstemon miniatus - Erick Velez Sanchez 02.jpg
Penstemon miser
A.Gray
Malheur penstemon Penstemon miser - Matt Berger 01.jpg
Penstemon moffatii
Eastw.
Moffatt's beardtongue Penstemon moffatii - Patrick Alexander 01.jpg
Penstemon mohinoranus
Straw
Cerro Mohinora penstemon
Penstemon monoensis
A.Heller
Mono penstemon Penstemon monoensis - Matt Berger 01.jpg
Penstemon montanus
Greene
cordroot beardtongue Penstemon montanus - Matt Berger 02.jpg
Penstemon moriahensis
N.H.Holmgren

Mount Moriah penstemon
Mt. Moriah beardtongue

Penstemon mucronatus
N.H.Holmgren
Penstemon multiflorus
(Benth.) Chapm. ex Small
manyflower beardtongue Penstemon multiflorus - Dwight Kingsbury 02.jpg
Penstemon murrayanus
Hook.
scarlet beardtongue Penstemon murrayanus - Eric Hunt 03.jpg
Penstemon nanus
D.D.Keck
dwarf beardtongue Penstemon nanus - Matt Berger 01.jpg
Penstemon navajoa
N.H.Holmgren
Navajo Mountain beardtongue
Penstemon neomexicanus
Wooton & Standl.
New Mexico beardtongue Penstemon neomexicanus - CK Kelly 01.jpg
Penstemon neotericus
D.D.Keck
Plumas County beardtongue Penstemon neotericus - Matt Berger 01.jpg
Penstemon newberryi
A.Gray

mountain pride
pride-of-the-mountains

Penstemon newberryi 2.jpg
Penstemon nitidus
Douglas ex Benth.
waxleaf penstemon Penstemon nitidus - Patrick Alexander square.jpg
Penstemon nudiflorus
A.Gray
Flagstaff beardtongue
Penstemon occiduus
Straw
Penstemon oklahomensis
Pennell

Oklahoma beardtongue
Oklahoma penstemon

Penstemon oliganthus
Wooton & Standl.
Apache beardtongue Penstemon oliganthus - Patrick Alexander 01.jpg
Penstemon ophianthus
Pennell

Arizona beardtongue
coiled anther penstemon

Penstemon ophianthus - Matt Berger 01.jpg
Penstemon osterhoutii
Pennell
Osterhout's beardtongue
Penstemon ovatus
Douglas
eggleaf beardtongue Penstemon ovatus - John A Haskins 03.jpg
Penstemon pachyphyllus
A.Gray ex Rydb.

thickleaf beardtongue
thickleaf penstemon

2017.06.04 13.05.42 IMG 0401 - Flickr - andrey zharkikh.jpg
Penstemon pahutensis
N.H.Holmgren

Pahute penstemon
Paiute beardtongue

Penstemon pahutensis - Chloe and Trevor Van Loon 02.jpg
Penstemon pallidus
Small
pale beardtongue
Penstemon palmeri
A.Gray

Palmer's penstemon
Palmer penstemon

Penstemon palmeri - P Holroyd 01.jpg
Penstemon papillatus
J.T.Howell
Inyo beardtongue Penstemon papillatus - Chloe and Trevor Van Loon 04.jpg
Penstemon parryi
A.Gray

Gray Parry penstemon
Parry's beardtongue

Penstemon parryi - Rachel Stringham 01.jpg
Penstemon parvulus
(A.Gray) Krautter
Aquarius Plateau beardtongue Penstemon parvulus - Penstemon parvulus 02.jpg
Penstemon parvus
Pennell
Aquarius Plateau penstemon
Penstemon patens
(M.E.Jones) N.H.Holmgren

Lone Pine beardtongue
Lone Pine penstemon

Penstemon patens Owens-Valley penstemon flowers.jpg
Penstemon payettensis
A.Nelson & J.F.Macbr.
Payette beardtongue Penstemon payettensis - Wendy McCrady 01.jpg
Penstemon paysoniorum
D.D.Keck
Payson's beardtongue Penstemon paysoniorum - Walter Fertig 01.jpg
Penstemon peckii
Pennell
Peck's beardtongue Penstemon peckii - Tom Wainwright 01.jpg
Penstemon penlandii
W.A.Weber

Kremling beardtongue
Kremling penstemon

Penstemon penlandii square.jpg
Penstemon pennellianus
D.D.Keck
Blue Mountain beardtongue Penstemon pennellianus - Tom Erler 01.jpg
Penstemon perfoliatus
Al.Brongn.
Penstemon perpulcher
A.Nelson
Minidoka beardtongue Penstemon perpulcher.jpg
Penstemon personatus
D.D.Keck
closethroat beardtongue Penstemon personatus - Matt Berger 02.jpg
Penstemon petiolatus
Brandegee

lime penstemon
petiolate beardtongue

Penstemon petiolatus - Matt Berger 02.jpg
Penstemon pinifolius
Greene

pineneedle beardtongue
pineneedle penstemon

Penstemon pinifolius - Patrick Alexander 01.jpg
Penstemon pinorum
L.M.Shultz & J.S.Shultz
Pine Valley penstemon
Penstemon plagapineus
Straw
pine-land penstemon
Penstemon platyphyllus
Rydb.

broadleaf beardtongue
broadleaf penstemon

Penstemon platyphyllus - Matt Berger 01.jpg
Penstemon potosinus
Straw
San Luis Potosi penstemon
Penstemon pratensis
Greene

whiteflower beardtongue
western whiteflower penstemon

Penstemon pratensis - Nelson Balcar 01.jpg
Penstemon procerus
Douglas ex Graham

littleflower penstemon
pincushion beardtongue

Penstemon procerus - Aiva Noringseth 01.jpg
Penstemon pruinosus
Douglas
Chelan beardtongue Penstemon pruinosus - Patrick Sowers 01.jpg
Penstemon pseudoparvus
Crosswh.

Mt. Washington beardtongue
San Mateo penstemon

Penstemon pseudoparvus - Alejandro Santillana 01.jpg
Penstemon pseudoputus
(Crosswh.) N.H.Holmgren
Kaibab Plateau beardtongue Penstemon pseudoputus - Robb Hannawacker 01.jpg
Penstemon pseudospectabilis
M.E.Jones
desert penstemon Penstemon pseudospectabilis - Patrick Alexander 01.jpg
Penstemon pudicus
Reveal & Beatley

bashful penstemon
Kawich Range beardtongue

Penstemon pudicus.jpg
Penstemon pumilus
Nutt.
Salmon River beardtongue Penstemon pumilus - Wendy McCrady 02.jpg
Penstemon punctatus
Brandegee
Penstemon purpusii
Brandegee
Snow Mountain beardtongue Penstemon purpusii - Scott Yarger 03.jpg
Penstemon putus
A.Nelson
Black River beardtongue
Penstemon radicosus
A.Nelson
matroot penstemon Penstemon radicosus - Patrick Alexander 01.jpg
Penstemon rattanii
A.Gray
Rattan's beardtongue Penstemon rattanii var. kleei - Scott Yarger 03.jpg
Penstemon reidmoranii
Zacarías & A.Wolfe
Reid Moran's penstemon
Penstemon retrorsus
Payson
Adobe Hills penstemon
Penstemon rhizomatosus
N.H.Holmgren
Schell Creek penstemon
Penstemon richardsonii
Douglas ex Lindl.
cutleaf beardtongue Penstemon richardsonii - Henrik Kibak 01.jpg
Penstemon roezlii
Regel
Roezl's penstemon Penstemon roezlii - Matt Berger 01.jpg
Penstemon roseus
(Cerv. ex Sweet) G.Don
pinto penstemon Penstemon roseus - Juan Cruzado Cortes 01.jpg
Penstemon rostriflorus
Kellogg

beaked beardtongue
beakflower penstemon
Bridge penstemon

Penstemon rostriflorus - flower black background.jpg
Penstemon rotundifolius
A.Gray
roundleaf penstemon Penstemon rotundifolius - Alejandra Pena Estrada 01.jpg
Penstemon rubicundus
D.D.Keck

Wassuck penstemon
Wassuk Range beardtongue

Diao Zhong Liu Penstemon 'Rubicundus' -Ying Ge Lan Brockhole, England- (9204859745).jpg
Penstemon rupicola
(Piper) Howell
cliff beardtongue Penstemon rupicola - Colton Veltkamp 01.jpg
Penstemon rydbergii
A.Nelson

meadow beardtongue
Rydberg penstemon
Rydberg's penstemon

Penstemon rydbergii - Craig Martin 02.jpg
Penstemon salmonensis
N.H.Holmgren
Penstemon saltarius
Crosswh.
Penstemon saxosorum
Pennell
upland beardtongue
Penstemon scapoides
D.D.Keck
pinyon beardtongue Penstemon scapoides - Jim Morefield 01.jpg
Penstemon scariosus
Pennell
White River beardtongue Penstemon scariosus - Grand County UT.jpg
Penstemon schaffneri
(Hemsl.) Straw
jarritos penstemon
Penstemon secundiflorus
Benth.
sidebells penstemon Penstemon secundiflorus - Anders Hastings 01.jpg
Penstemon seorsus
(A.Nelson) D.D.Keck
shortlobe penstemon Penstemon seorsus plant in SW Idaho 2.jpg
Penstemon sepalulus
A.Nelson
littlecup beardtongue Penstemon sepalulus - Anders Hastings 01.jpg
Penstemon serrulatus
Menzies ex Sm.
serrulate penstemon Penstemon serrulatus - Ellyne Geurts 02.jpg
Penstemon smallii
A.Heller
Small's beardtongue Pen smallii.jpg
Penstemon spatulatus
Pennell
Wallowa penstemon Penstemon spatulatus - Drew Meyer 01.jpg
Penstemon speciosus
Douglas
royal penstemon Penstemon speciosus - Joshua Zupan 01.jpg
Penstemon spectabilis
Thurb. ex A.Gray
showy penstemon Penstemon spectabilis - Vasily Reinkymov 01.jpg
Penstemon stenophyllus
A.Gray
Sonoran beardtongue Penstemon stenophyllus - Patrick Alexander 01.jpg
Penstemon stephensii
Brandegee
Stephens' penstemon J20171012-0014--Penstemon stephensii--RPBG--DxO (37693840276).jpg
Penstemon strictiformis
Rydb.

Mancos penstemon
stiff penstemon

Penstemon strictiformis - San Juan County.jpg
Penstemon strictus
Benth.

Rocky Mountain beardtongue
Rocky Mountain penstemon

Penstemon strictus- Stephen Hornbeck 01.jpg
Penstemon subglaber
Rydb.
smooth penstemon Penstemon subglaber - Matt Berger 01.jpg
Penstemon subserratus
Pennell
finetooth beardtongue Penstemon subserratus - Sam Kieschnick 01.jpg
Penstemon subulatus
M.E.Jones
hackberry beardtongue Penstemon subulatus - Rachel Stringham 01.jpg
Penstemon sudans
M.E.Jones

Susanville beardtongue
Susanville penstemon

Penstemon sudans - Matt Berger 01.jpg
Penstemon superbus
A.Nelson
superb beardtongue Penstemon superbus - Alina Martin 01.jpg
Penstemon tenuiflorus
Pennell
eastern whiteflower beardtongue Penstemon tenuiflorus - Samuel A. Schmid 01.jpg
Penstemon tenuifolius
Benth.
Penstemon tenuis
Small
sharpsepal beardtongue Penstemon tenuis - Laura Clark 01.jpg
Penstemon tepicensis
Straw
Penstemon teucrioides
Greene
germander beardtongue Penstemon teucrioides 01.jpg
Penstemon thompsoniae
(A.Gray) Rydb.

Thompson's penstemon
Thompson's beardtongue
Thompson penstemon

Penstemon thompsoniae - Matt Berger 01.jpg
Penstemon thurberi
Torr.

Thurber's penstemon
Thurber penstemon

Penstemon thurberi - Van Loon 01.jpg
Penstemon tidestromii
Pennell
Tidestrom's beardtongue Penstemon tidestromii - Matt Berger 02.jpg
Penstemon tiehmii
N.H.Holmgren
Tiehm's penstemon
Penstemon tracyi
D.D.Keck
Trinity penstemon Penstemontracyi.jpg
Penstemon triflorus
A.Heller
Heller's beardtongue Penstemon triflorus - Nick Loveland 01.jpg
Penstemon triphyllus
Douglas
Riggin's penstemon Edwards' botanical register, or, Ornamental flower-garden and shrubbery .. (1829-1847) (21171546255).jpg
Penstemon tubaeflorus
Nutt.
white wand beardtongue Penstemon tubiflorus var. tubiflorus.jpg
Penstemon uintahensis
Pennell
Uinta Mountain beardtongue Penstemon uintahensis - Parker Hopkins 01.jpg
Penstemon utahensis
Eastw.
Utah penstemon Penstemon utahensis 2.jpg
Penstemon venustus
Douglas
Venus penstemon Penstemon venustus - Matt Berger 01.jpg
Penstemon virens
Pennell ex Rydb.
Front Range beardtongue Penstemon virens - Anders Hastings 01.jpg
Penstemon virgatus
A.Gray
upright blue beardtongue Penstemon virgatus - Craig Martin 01.jpg
Penstemon vizcainensis
Moran
Penstemon vulcanellus
Crosswh.
Penstemon wardii
A.Gray
Ward's beardtongue Penstemon wardii - Matt Berger 04.jpg
Penstemon washingtonensis
D.D.Keck
Washington beardtongue
Penstemon watsonii
A.Gray

Watson's penstemon
Watson's beardtongue
Watson penstemon

Penstemon watsonii - Matt Berger 01.jpg
Penstemon wendtiorum
B.L.Turner [5]
Penstemon whippleanus
A.Gray

dark penstemon
Whipple's penstemon

Penstemon whippleanus - Marek 01.jpg
Penstemon wilcoxii
Rydb.
Wilcox's penstemon Penstemon wilcoxii - Matt Berger 01.jpg
Penstemon wislizeni
(A.Gray) Straw
Penstemon wislizeni - Alejandra Pena Estrada 01.jpg
Penstemon wrightii
Hook.
Wright's beardtongue Penstemon wrightii - Texas 02.jpg
Penstemon xylus
A.Nelson
Tushar Bluemat Penstemon
Penstemon yampaensis
Penland
Yampa penstemon Penstemon yampaensis - Ernie Marx 02.jpg

Penstemon natural hybrids

As of 2024 these seven naturally occurring hybrids are valid, according to POWO. [1] Two are considered valid species, according to WFO. [2]

Scientific name
Authority
Common namesPhoto
Penstemon × crideri
A.Nelson

Crider penstemon
Crider's penstemon

Penstemon × dubius
Davidson
dubius penstemon

Penstemon × jonesii
Pennell
Penstemon jonesii
Pennell

Jones' penstemon Penstemon x jonesii - Darrin Gobble 05.jpg
Penstemon × mirus
A.Nelson

Penstemon × moronensis
Crosswh.
Penstemon moronensis
Crosswh.

Penstemon × parishii
A.Gray
Penstemon x parishii - Jordan Zylstra 01.jpg
Penstemon × peirsonii
Munz & I.M.Johnst.

Additional Penstemon species

These five species are listed as accepted by World Flora Online, but are not accepted by Plants of the World Online. [2]

Scientific name
Authority
Common namesPhoto
Penstemon brevibarbatus
Crosswhite
Penstemon cerrosensis
Kellogg
Penstemon cerrosensis - Sula Vanderplank 01.jpg
Penstemon compactus
(D.D.Keck) Crosswh.

cache beardtongue
compact penstemon

Penstemon compactus - crothfels 01.jpg
Penstemon jaliscensis
B.L.Rob.
Penstemon minutifolius
Straw

Related Research Articles

<i>Penstemon</i> Genus of plants

Penstemon, the beardtongues, is a large genus of roughly 280 species of flowering plants native to North America from northern Canada to Central America. It is the largest genus of flowering plants endemic to North America. As well as being the scientific name, penstemon is also widely used as a common name for all Penstemon species alongside beardtongues.

<i>Campanula rotundifolia</i> Species of flowering plant

Campanula rotundifolia, the common harebell, Scottish bluebell, or bluebell of Scotland, is a species of flowering plant in the bellflower family Campanulaceae. This herbaceous perennial is found throughout the temperate regions of the northern hemisphere. In Scotland, it is often known simply as bluebell. It is the floral emblem of Sweden where it is known as small bluebell. It produces its violet-blue, bell-shaped flowers in late summer and autumn.

<i>Hesperocyparis arizonica</i> Species of conifer

Hesperocyparis arizonica, the Arizona cypress, is a North American species of tree in the cypress family Cupressaceae, native to the southwestern United States and Mexico. Populations may be scattered rather than in large, dense stands.

<i>Hesperocyparis goveniana</i> Californian species of western cypress

Hesperocyparis goveniana commonly known as Californian cypress and Gowen cypress, is a species of western cypress that is endemic to a small area of coastal California near Monterey. It was formerly classified as Cupressus goveniana.

<i>Microseris</i> Genus of flowering plants in the family Asteraceae

Microseris is a genus of plants in the tribe Cichorieae within the family Asteraceae, plants that often called composites. They are native to North America, South America, Australia, and New Zealand.

<i>Geum triflorum</i> Species of flowering plant

Geum triflorum, commonly known as prairie smoke, old man's whiskers, or three-flowered avens, is a spring-blooming perennial herbaceous plant of the Rosaceae family. It is a hemiboreal continental climate species that is widespread in colder and drier environments of western North America, although it does occur in isolated populations as far east as New York and Ontario. It is particularly known for the long feathery plumes on the seed heads that have inspired many of the regional common names and aid in wind dispersal of its seeds.

<i>Nothocalais</i> Genus of flowering plants

Nothocalais is a genus of North American flowering plants in the tribe Cichorieae within the family Asteraceae. There are known generally as false dandelions or false agoseris.

<i>Penstemon bicolor</i> Plant species in the plantain family

Penstemon bicolor is a species of penstemon known by the common name pinto penstemon. It is native to the desert mountains and valleys of southern Nevada, eastern California, and western Arizona, where it grows in scrub, woodland, and other local habitat. It is a perennial herb which may exceed one meter in maximum height.

<i>Penstemon grandiflorus</i> Species of flowering plant in the family Plantaginaceae

Penstemon grandiflorus, known by the common names shell-leaved penstemon, shell-leaf beardtongue, or large-flowered penstemon, is a tall and showy plant in the Penstemon genus from the plains of North America. Due to its large flowers it has found a place in gardens, particularly ones aimed at low water usage like xeriscape gardens.

<i>Castilleja septentrionalis</i> Species of flowering plant

Castilleja septentrionalis is a species of Indian paintbrush known by several common names, including northern paintbrush, sulfur paintbrush, and pale painted cup. There is taxonomic disagreement as to if it is one species widely distributed in mountain and alpine environments of North America or if there is a second species, Castilleja sulphurea, in the Rocky Mountains.

Eurybia horrida is a species of flowering plant in the family Asteraceae known by the common names spiny aster and horrid herrickia. It is native to Colorado and New Mexico in the United States, where it occurs only in the Canadian River basin. It most often included in genus Eurybia.

<i>Penstemon acuminatus</i> Plant species in the plantain family

Penstemon acuminatus is a species of flowering plant in the plantain family known by the common names sharpleaf penstemon and sand-dune penstemon. It is native to the dry interior of the northwestern United States.

<i>Eurybia kingii</i> Species of flowering plant

Eurybia kingii is a North American species of flowering plants in the family Asteraceae, called the King's serpentweed or King's aster. It has been found only in the State of Utah in the western United States.

<i>Penstemon whippleanus</i> Species of flowering plant

Penstemon whippleanus, commonly known as dusky penstemon, dusky beardtongue, Whipple's penstemon, or Whipple's beardtongue, is a summer blooming perennial flower in the large Penstemon genus. It is a widespread plant within the hemiboreal forests of the Rocky Mountains in North America. It is noted for the large deep purple-red flowers and a preference for high mountain elevations.

<i>Penstemon secundiflorus</i> Species of flowering plant

Penstemon secundiflorus, commonly known as sidebells penstemon, or orchid beardtoungue is a species of Penstemon that grows in dry forests, high plains, and scrub lands from Wyoming to Mexico. It is a herbaceous perennial plant that typically grows to a height of 20 to 50 cm and has narrow, lance-shaped leaves that are grayish-green in color. The flowers of the sidebells penstemon are tubular in shape and are arranged in a one-sided spike, with the blooms all facing the same direction, and for this reason was named "secundiflorus", which means "one-sided flowers". The flowers are most often delicate shades of orchid or lavender. It is sometimes used in xeriscaping, rock gardens, and wildflower meadows, and is well-suited to dry, sunny locations with well-draining soil.

<i>Penstemon ambiguus</i> Species of flowering plant

Penstemon ambiguus, commonly known as the bush penstemon, pink plains penstemon, or gilia beardtongue is a species of Penstemon that grows in the shortgrass prairies and deserts of the western United States and northern Mexico. This bush-like penstemon grows in sandy, loose, and creosote soils and is particularly known for the spectacular flowering show it produces, sometime seasons turning whole hillsides bright pink–white.

<i>Lupinus caudatus</i> Species of flowering plant in the family Fabaceae

Lupinus caudatus is a widespread species of wildflower in genus Lupinus from western North America known by the common names tailcup lupin and spurred lupin. It is distinctive for the short spur on its purple-blue flowers, for which it is named. Because of its wide distribution and toxicity it commonly causes poisonings of susceptible livestock such as horses, cattle, and sheep, though it is eaten without harm by wild herbivores like deer and elk. It is generally found from the Coastal Ranges and Sierra Nevada Mountains in the west to the Rocky Mountains in the east.

<i>Nolina texana</i> Species of flowering plant in the family Asparagaceae

Nolina texana, the Texas sacahuiste or Texas beargrass, is a plant in the asparagus family that resembles a large clump of grass. It grows in the south central United States and Northern Mexico. They are sometimes grown as a garden plant in xeriscape or native plant gardens.

References

  1. 1 2 3 "Penstemon Schmidel". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 27 March 2024.
  2. 1 2 3 4 "Penstemon Schmidel". World Flora Online . Retrieved 27 March 2024.
  3. Freeman, Craig C. (5 November 2020). "Penstemon grandiflorus - FNA". Flora of North America. Retrieved 27 March 2024.
  4. Penstemon grandiflorus, USDA Natural Resources Conservation Service PLANTS Profile, 27 March 2024
  5. Turner, B. L. (2010). Taxonomy of the Penstemon campanulatus complex (Scrophulariaceae) and description of a new species from its midst. Phytoneuron 31 1–5.