Color of the 9 to 15 rays, violet. Stem, slender, low, 1 to 1 1/2 feet high, slightly rough, branched above, bearing numerous heads of flowers. Leaves, small, roughish, those below oval, pointed, with long, slender petioles; those above, linear, small, sessile, slightly clasping. July to September.
In dry, sandy soil, as the pine barrens of New Jersey, south to Tennessee and Kentucky.