Penstemon species

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Scientific Name Penstemon albidus USDA PLANTS Symbol PEAL2
Common Name White Penstemon, White Beardtongue ITIS Taxonomic Serial No. 33666
Family Plantaginaceae (Plantain) SEINet
Reference
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Description Life Zones and habitat: Plains and foothills (3500 to 6800 ft.); sandy, rocky soils in pastures, fields, roadsides and other open areas.
Plant: Erect perennial, 4 to 22 inches tall; rough, minute hairs on stem and foliage; 2 to 5 stems arising from base.
Leaves: Basal leaves petiolate, mostly smooth edges, hairless or somewhat hairy, narrowly-spatulate to oblong, to 3-1/2 inches long and up to 3/4-inch wide with blunt or rounded tips; stem leaves opposite, sessile and more lanceolate upward with small-toothed edges.
Inflorescence: Whorl-like clusters of pubescent-hairy, funnel-shaped flowers, each up to 3/4-inch long, with pointed sepals 1/4 to 1/3 inch long below; white to pale-lavender petals with prominent purplish veins, united at base with 3-lobed lower lip and somewhat smaller 2-lobed upper lobe; 4 dark-tipped stamens along upper side; staminode with yellow hairs.
Bloom Period: May to July.
References: "Flora of Colorado" by Jennifer Ackerfield, "Wildflowers of Texas" by Michael Eason, "Manual of the Vascular Plants of Texas" by Correll and Johnston, American Penstemon Society and Minnesota Wildflowers.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Penstemon whippleanus USDA PLANTS Symbol PEWH
Common Name Whipple's Penstemon ITIS Taxonomic Serial No. 33793
Family Plantaginaceae (Plantain) formerly Scrophulariaceae SEINet
Reference
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Description Life zones and habitat: Montane to alpine (8000 to 13,500 ft); 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 lanceolate to ovate 1-1/2 to 3-1/2 inches long, on petioles and entire to dentate margins; stem leave sessile, lanceolate to oblanceolate, smooth margins, and arranged in opposite pairs, 1 to 2-1/2+ inches long.
Inflorescence: Dark purple (usually) blossoms in 2 to 5 one-side clusters atop and along stem; blossoms pointing slightly downward; also occurs in red-violet, off-white, lilac and bi-colored lilac and white; corolla glandular-hairy on outside, lower lobes with long hairs; staminode with a tuft of yellow hairs at tip; blue anthers smooth.
Bloom Period: June to September.
References: "The Alpine Flora of the Rocky Mountains" by Richard W. Scott, "Flora of Colorado" by Jennifer Ackerfield and www.americansouthwest.net.
Notes: To view the purple version of P. whippleanus click here.
BONAP Distribution Map

Colorado Status:
Native

Click here for purple and red Penstemons.

© Tom Lebsack 2021