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• Species 74

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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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