Sulfur Penstemon, Taper-leaved Penstemon
Penstemon attenuatus var. attenuatus
Synonym: Penstemon attenuatus ssp. attenuatus

Taper-leaved penstemon blooming at the summit of Lookout Mountain, Badger Creek Wilderness..........July 4, 2013.
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Examples light and dark flower-colored forms of taper-leaved penstemon from along the School Canyon Trail #468 along the north side of Ball Point and uphill to the west, Badger Creek Wilderness...........June 14, 2014.
Paul Slichter