(name means "fifth stamen")
Family, Figwort. Color, lilac or whitish. Corolla, tubular, 2-lipped, the upper lip 2-divided, the lower 3. There are 4 fertile stamens; the fifth, sterile, with a profusely bearded filament, gives the flower its name. Flowers, large, crowded in a dense panicle. Stem, 2 to 3 feet high, covered with a fine, whitish bloom. Leaves, lance-shape or ovate, those below somewhat toothed. May to July.
Dry or rocky, sterile soil, Maine to Georgia and westward.