genus
Beardtongues
Penstemon
Field notes
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.
Formerly placed in the family Scrophulariaceae by the Cronquist system, new genetic research has placed it in the vastly expanded family Plantaginaceae. The total number of species is disagreed upon due to ongoing research into if some of the named species are actually subspecies or illegitimate concepts of previously described species.
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Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Key traits
- Layer
- Shrubs
- Plant type
- Perennial Shrub Wildflower
From USDA PLANTS.
Top native beardtongues All
Native to the US, ranked by caterpillars, then bees and other hosts, food, flowers and shelter.
-
Beardlip Penstemon
Penstemon barbatus
caterpillars
9
food
3
flowers
53
-
Small-flower Beardtongue
Penstemon procerus
caterpillars
8
bees
1
food
2
flowers
74
-
Lilac Penstemon
Penstemon gracilis
caterpillars
7
bees
1
food
2
flowers
68
-
Hot Rock Penstemon
Penstemon deustus
caterpillars
7
bees
1
food
2
flowers
51
-
Large-flowered Beardtongue
Penstemon grandiflorus
caterpillars
7
bees
1
food
2
flowers
48
-
Rocky Mountain Beardtongue
Penstemon strictus
caterpillars
7
food
4
flowers
55
-
Fendler's Penstemon
Penstemon fendleri
caterpillars
7
food
3
flowers
43
-
Thurber's Beardtongue
Penstemon thurberi
caterpillars
7
food
3
flowers
36
-
White-flower Beardtongue
Penstemon albidus
caterpillars
7
food
2
flowers
52
-
Desert Penstemon
Penstemon pseudospectabilis
caterpillars
7
food
2
flowers
48
-
Foxglove Beardtongue
Penstemon digitalis
caterpillars
6
bees
1
food
3
flowers
63
-
Rydberg's Beardtongue
Penstemon rydbergii
caterpillars
6
bees
1
food
3
flowers
56
-
Low Beardtongue
Penstemon humilis
caterpillars
6
bees
1
food
2
flowers
53
-
Sulphur Penstemon
Penstemon attenuatus
caterpillars
6
bees
1
food
2
flowers
44
-
Richardson's Beardtongue
Penstemon richardsonii
caterpillars
6
bees
1
food
2
flowers
41