Penstemon glaber var. alpinus

(Alpine Sawsepal Penstemon)

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Penstemon glaber var. alpinus, Lower Cataract Lake, Summit Co. 1573/1584

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Penstemon glaber var. alpinus, Lower Cataract Lake, Summit Co. 1541

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Penstemon glaber var. alpinus, Lower Cataract Lake, Summit Co. 1539

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Penstemon glaber var. alpinus, Lower Cataract Lake, Summit Co. 1586

Scientific Name Penstemon glaber var. alpinus USDA PLANTS Symbol PEGLA
Common Name Alpine Sawsepal Penstemon ITIS Taxonomic Serial No. 529485
Family Plantaginaceae (Plantain) formerly Scrophulariaceae SEINet
Reference
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Description Life zones and habitat: Foothills to subalpine (5500 to 11000 ft). Common in open meadows with gravelly soils.
Plant: Erect, stout unbranched perennial 20 to 26 inches tall with smooth stems.
Leaves: Basal leaves usually lanceolate, sometimes ovate with entire margins and 3/4 to 3-1/8 inches long; stem leaves linear-lanceolate to lanceolate, entire margins, 1-1/4 to 4-3/4 inches long and upper-most clasping; leaves smooth or hairy.
Inflorescence: Flowers in 8 to 12 crowded clusters along stem, tending to be on one side; each 5-lobed corolla 1 to 1-3/8 inches long, blue to lavender and hairless externally; lower lobes smooth or somewhat hairy internally; staminode (unfertile stamen in center of blossom) tip hairy, rounded or with slight notch, and anthers usually hairy.
Bloom Period: June to August.
References: "Flora of Colorado" by Jennifer Ackerfield and Montana Field Guide.
BONAP Distribution Map
Colorado Status:
Native

© Tom Lebsack 2022

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