Penstemon roseus (Cerv. ex Sweet) G.Don
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Authority
New York Botanical Garden. Herbarium of Dr. Per Axel Rydberg. Purchased, 1899. Contributions from the New York Botanical Garden.
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Family
Scrophulariaceae
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Scientific Name
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Description
Species Description - A glabrous cespitose perennial, 2-4 dm. high. Basal leaves oblanceolate, short-petioled, 3-5 cm. long, entire, mostly acute: stem-leaves opposite, sessile, oblong or lanceolate, entire, acute or the uppermost acuminate: flowers in a dense interrupted spikelike inflorescence: calyx-lobes broadly ovate, almost cuspidate-acuminate, tinged with dark purple and white and with an erose-dentate margin: corolla purple with very dark limb: lower lip broad with 3 rounded reflexed lobes, bearded on the inside: upper lip with 2 erect narrower lobes: sterile stamens narrowly clavate, shortbearded.
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Discussion
This species is nearest related to P. procerus, but easily distinguished by the erose sepals and more reflexed lower lip. It grows at an altitude of 2000-2700 m.
Colorado: Indian Creek Pass, 1900, F. K. Vreeland, 615 (type); South Park, 1873, JOhn Wolfe (Wheeler Expedition), 293; Chicken Creek, West La Plata Mountains, 1898, Baker, Earle & Tracy, 658.
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Distribution
Colorado
Colorado United States of America North America|