Large-flowerd beard-tongue (Penstemon grandiflorus)
Stout, perennial plant to 31/2 feet tall. Blooms July-August; flowers up to 2 inches long, purplish, tubular, flaring into 2 upper and 3 lower lobes; arranged in groups of 2 to 6 at upper part of stem with a pair of small leafy structures below each group. Leaves rounded, opposite, clasping. Leaves and stems waxy, bluish-green. Upland prairies, often sandy soil. American Indian toothache remedy.