Penstemon strictus

(Rocky Mountain Penstemon)

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Penstemon strictus, Lake Dillon, Summit Co. 5522

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Penstemon strictus, Lake Dillon, Summit Co. 9137

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Penstemon strictus, FR 265, Gunnison National Forest, Gunnison Co. 2551

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Penstemon strictus, FR 265, Gunnison National Forest, Gunnison Co. 2570

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Penstemon strictus, Breckenridge, Summit Co. 2787

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Penstemon strictus, Lake Dillon, Summit Co. 9151

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Penstemon strictus, Along CR 13 south of Meeker, Rio Blanco Co. 2378

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 (5500 to 11000 ft). Meadows, woodlands openings.
Plant: Erect, stout unbranched perennial 14 to 28 inches 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; leaves often folded.
Inflorescence: Flowers in a 4 to 10 small clusters along stem, tending to be on one side; 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.
Bloom Period: June to August.
References: "Flora of Colorado" by Jennifer Ackerfield and American Southwest.
BONAP Distribution Map
Colorado Status:
Native

© Tom Lebsack 2022

Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County