|Scientific Name||Penstemon virgatus var. asa-grayi (Penstemon unilateralis)||USDA PLANTS Symbol||PEVIA|
|Common Name||Upland Blue Beardtongue, Beardless Sidebells Penstemon||ITIS Taxonomic Serial No.||538522|
|Family||Plantaginaceae (Plantain) formerly Scrophulariaceae||SEINet
Life zones and habitat: Plains to montane (4400 to 10000 ft). Grasslands, meadows, rocky hillsides and moist locations in coniferous forests.
Plant: Erect unbranched perennial 1 to 2+ feet tall, multiple stems, usually in colonies.
Leaves: Basal leaves narrowly to widely oblanceolate 3/4 to 4 inches long; stem leaves linear to lanceolate; both smooth with entire margins.
Inflorescence: Hairless flowers in a thryse, 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 and anthers hairless, staminode (unfertile stamen in center) hairless or with small hairs at tip.
Bloom Period: June to August.
References: "Flora of Colorado" by Jennifer Ackerfield and American Southwest.
|BONAP Distribution Map
© Tom Lebsack 2022
Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County