Penstemon palmeri var. palmeri
Distal cauline leaves connate-perfoliate. Thyrses: peduncles and pedicels glandular-pubescent. Flowers: calyx lobes glandular-pubescent; corolla-tube 4–6 mm; pollen-sacs 1.8–2.4 mm. 2n = 16.
Phenology: Flowering May–Jul.
Habitat: Washes, roadsides, canyon floors, creosote shrublands, pinyon-juniper woodlands.
Elevation: 800–2800 m.
Ariz., Calif., Colo., Idaho, Nev., N.Mex., Utah, Wash., Wyo.
Because of its stature and showy flowers, var. palmeri is seeded widely in the western United States along roadsides after construction. Populations in Colorado, Idaho, Washington, and Wyoming are introduced; some in New Mexico also appear to have resulted from seeding.
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