Penstemon species

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Rocky Mountain Penstemon (Penstemon strictus)

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Scientific Name Penstemon hallii USDA PLANTS Symbol
PEHA9
Common Name Hall's Beardtongue ITIS Taxonomic Serial No.
33699
Family Plantaginaceae (Plantain) formerly Scrophulariaceae SEINet
Reference
Click Here
Description Life zones and habitat: Alpine. Tundra, rocky areas.
Plant: Perennial 4 to 8 inches tall, several erect stems.
Leaves: Mostly basal leaves, smooth, narrowly oblanceolate.
Inflorescence: Bright reddish-purple or violet flowers, white streaks in throat; clustered atop stems on shorter plants; one-sided grouping on taller plants.
References: Descr. adapted from "A Guide To Rocky Mountain Plants" by Roger L. Williams
Colorado Status
Native, Endemic to the state
Scientific Name Penstemon harbourii USDA PLANTS Symbol
PEHA10
Common Name Harbour's Beardtongue ITIS Taxonomic Serial No.
33700
Family Plantaginaceae (Plantain) formerly Scrophulariaceae SEINet
Reference
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Description Life zones and habitat: Alpine. Open, rocky areas.
Plant: Creeping, mat-forming perennial, leafy stems up to 6 inches long.
Leaves: Stem leaves lanceolate, oblanceolate or spatulate, usually light green or grayish with small hairs on surface, about 1 inch long.
Inflorescence: Light purple flowers with 5 lobes, hairy outside and near the lips of the lower three lobes.
References: Descr. adapted from "A Guide To Rocky Mountain Plants" by Roger L. Williams and www.americansouthwest.net.
Colorado Status
Native, Endemic to the state
Scientific Name Penstemon procerus var.procerus USDA PLANTS Symbol
PEPRP
Common Name Clustered Penstemon, Little Penstemon ITIS Taxonomic Serial No.
33746
Family Plantaginaceae (Plantain) formerly Scrophulariaceae SEINet
Reference
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Description Life zones and habitat: Montane to alpine. Moist meadows, open areas especially at higher elevations.
Plant: Erect perennial 2 to 16 inches tall (shorter at higher elevations).
Leaves: Basal leaves oblanceolate to elliptic, up to 4 inches long and petiolate; stem leaves much smaller and stalkless; glabrous (smooth, not hairy).
Inflorescence: Purplish-blue flowers in dense clusters in whorls separated by open breaks; each 5-lobed flower less than 1/2-inch long, lower lip with internal hairs near tip.
References: Descr. adapted from "The Alpine Flora of the Rocky Mountains" by Richard W. Scott and www.americansouthwest.net.
Colorado Status
Native
Scientific Name Penstemon strictus USDA PLANTS Symbol
PEST2
Common Name Rocky Mountain Penstemon ITIS Taxonomic Serial No.
33772
Family Plantaginaceae (Plantain) formerly Scrophulariaceae SEINet
Reference
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Description Life zones and habitat: Foothills to subalpine. Meadows, woodlands openings.
Plant: Erect, stout unbranched perennial 1 to 2-1/2 feet tall, multiple stems, usually in colonies.
Leaves: Basal leaves narrowly oblanceolate up to 5-1/2 inches long; stem leaves linear, tending to erect and shorter.
Inflorescence: Flowers in a few small clusters along stem, tending to be on one side of the stem; each 5-lobed flower about 1 inch long, blue/purple, more blue along lobe edges. Otherwise hairless blossoms have hairy stamens (anthers); staminode (unfertile stamen in center of blossom) has no hairs.
References: Descr. adapted from www.americansouthwest.net.
Colorado Status
Native
Scientific Name Penstemon virgatus var. asa-grayi USDA PLANTS Symbol
PEVIA
Common Name Upland Blue Beardtongue, Beardless Sidebells Penstemon ITIS Taxonomic Serial No.
538522
Family Plantaginaceae (Plantain) formerly Scrophulariaceae SEINet
Reference
Click Here
Description Life zones and habitat: Foothills to Montane. Grassland, meadows, moist locations in coniferous forests.
Plant: Erect unbranched perennial 1 to 3 feet tall, multiple stems, usually in colonies.
Leaves: Smooth, thin linear to lanceolate up to 4 inches long.
Inflorescence: Hairless flowers in a raceme, tending to be on one side of the stem; each 5-lobed flower about 1 inch long, pale purple, sepals purplish with smooth edges. Stamens, anthers and staminode (unfertile stamen in center) are hairless.
References: Descr. adapted from www.americansouthwest.net.
Colorado Status
Native
Scientific Name Penstemon whippleanus USDA PLANTS Symbol
PEWH
Common Name Dusky Beardtongue, Whipple's Penstemon ITIS Taxonomic Serial No.
33793
Family Plantaginaceae (Plantain) formerly Scrophulariaceae SEINet
Reference
Click Here
Description Life zones and habitat: Subalpine and alpine. Open, dry areas such as clearings, meadows, talus slopes, etc.
Plant: Erect perennial with multiple, leafy stems up to 2 feet tall.
Leaves: Basal leaves ovate to elliptic with petioles; stem leave sessile, oblong to lanceolate, smooth edges, and arranged in opposite pairs, about 3 inches long, sometimes longer.
Inflorescence: Clusters of usually dark purple blossoms atop and along stem, arranged in a ring and pointing slightly downward; also occurs in red-violet, off-white, lilac and bi-colored lilac and white.
References: Descr. adapted from "The Alpine Flora of the Rocky Mountains" by Richard W. Scott and www.americansouthwest.net.
Notes: To view a white version of P. whippleanus click here.
Colorado Status
Native

Click here for white and red Penstemons.


© Tom Lebsack 2017