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World flora
Plants of the world flora
Explore
Families
Genera
Species
74
Genus:
Penstemon
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Penstemon acuminatus
Douglas ex Lindl.
Sharpleaf penstemon
13
13
Observations
Scrophulariaceae
Penstemon albertinus
Greene
Alberta beardtongue
21
17
Observations
Scrophulariaceae
Penstemon albidus
Nutt.
White penstemon
10
10
Observations
Scrophulariaceae
Penstemon ambiguus
Torr.
Gilia beardtongue
23
20
Observations
Scrophulariaceae
Penstemon anguineus
Eastw.
Siskiyou beardtongue
10
10
Observations
Scrophulariaceae
Penstemon angustifolius
Nutt. ex Pursh
Broadbeard beardtongue
10
9
Observations
Scrophulariaceae
Penstemon aridus
Rydb.
Stiffleaf penstemon
4
4
Observations
Scrophulariaceae
Penstemon arkansanus
Pennell
Arkansas beardtongue
23
18
Observations
Scrophulariaceae
Penstemon australis
Small
Eustis Lake beardtongue
2
2
Observations
Scrophulariaceae
Penstemon azureus
Benth.
Azure penstemon
8
8
Observations
Scrophulariaceae
Penstemon baccharifolius
Hook.
Baccharisleaf beardtongue
26
23
Observations
Scrophulariaceae
Penstemon barbatus
(Cav.) Roth
Beard-Tongue
1 196
924
Observations
Scrophulariaceae
Penstemon buckleyi
Pennell
Buckley's beardtongue
6
6
Observations
Scrophulariaceae
Penstemon calcareus
Brandegee
Limestone beardtongue
6
6
Observations
Scrophulariaceae
Penstemon calycosus
Small
Longsepal beardtongue
36
34
Observations
Scrophulariaceae
Penstemon canescens
(Britton) Britton
Eastern gray beardtongue
1
1
Observation
Scrophulariaceae
Penstemon cardinalis
Wooton & Standl.
Cardinal beardtongue
2
1
Observation
Scrophulariaceae
Penstemon cardwellii
Howell
Cardwell's beardtongue
10
10
Observations
Scrophulariaceae
Penstemon carnosus
Pennell
Fleshy beardtongue
4
4
Observations
Scrophulariaceae
Penstemon centranthifolius
(Benth.) Benth.
Scarlet bugler
87
85
Observations
Scrophulariaceae
Penstemon cobaea
Nutt.
Cobaea beardtongue
189
157
Observations
Scrophulariaceae
Penstemon cyananthus
Hook.
Wasatch beardtongue
39
35
Observations
Scrophulariaceae
Penstemon cyaneus
Pennell
Blue penstemon
1
1
Observation
Scrophulariaceae
Penstemon cyathophorus
Rydb.
Sagebrush beardtongue
2
2
Observations
Scrophulariaceae
Penstemon davidsonii
Greene
Davidson's penstemon
97
85
Observations
Scrophulariaceae
Penstemon digitalis
Nutt. ex Sims
Foxglove Beardtongue
1 464
1 151
Observations
Scrophulariaceae
Penstemon euglaucus
English
Glaucous beardtongue
3
3
Observations
Scrophulariaceae
Penstemon floridus
Brandegee
Panamint beardtongue
4
4
Observations
Scrophulariaceae
Penstemon fruticiformis
Coville
Death Valley beardtongue
23
23
Observations
Scrophulariaceae
Penstemon fruticosus
(Pursh) Greene
Bush penstemon
58
40
Observations
Scrophulariaceae
Penstemon glaber
Pursh
Sawsepal penstemon
20
20
Observations
Scrophulariaceae
Penstemon gracilis
Nutt.
Lilac penstemon
21
15
Observations
Scrophulariaceae
Penstemon grandiflorus
Nutt.
Large beardtongue
23
20
Observations
Scrophulariaceae
Penstemon grinnellii
Eastw.
Grinnell's beardtongue
74
72
Observations
Scrophulariaceae
Penstemon heterophyllus
Lindl.
Bunchleaf penstemon
115
98
Observations
Scrophulariaceae
Penstemon hirsutus
(L.) Willd.
Hairy beardtongue
182
135
Observations
Scrophulariaceae
Penstemon incertus
Brandegee
Mojave beardtongue
5
5
Observations
Scrophulariaceae
Penstemon jamesii
Benth.
James' beardtongue
17
17
Observations
Scrophulariaceae
Penstemon laevigatus
Aiton
Eastern smooth beardtongue
7
4
Observations
Scrophulariaceae
Penstemon laevis
Pennell
Southwestern beardtongue
22
22
Observations
Scrophulariaceae
Penstemon laxiflorus
Pennell
Nodding beardtongue
15
15
Observations
Scrophulariaceae
Penstemon leiophyllus
Pennell
Smoothleaf beardtongue
19
18
Observations
Scrophulariaceae
Penstemon lentus
Pennell
Handsome beardtongue
8
6
Observations
Scrophulariaceae
Penstemon montanus
Greene
Cordroot beardtongue
8
8
Observations
Scrophulariaceae
Penstemon murrayanus
Hook.
Scarlet beardtongue
10
9
Observations
Scrophulariaceae
Penstemon nitidus
Douglas ex Benth.
Waxleaf penstemon
16
14
Observations
Scrophulariaceae
Penstemon osterhoutii
Pennell
Osterhout's beardtongue
4
4
Observations
Scrophulariaceae
Penstemon pallidus
Small
Pale beardtongue
33
11
Observations
Scrophulariaceae
Penstemon palmeri
A. Gray
Palmer's penstemon
1
1
Observation
Scrophulariaceae
Penstemon petiolatus
Brandegee
Petiolate beardtongue
3
3
Observations
Scrophulariaceae
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Species