Color, rose purple. Heads of flowers, large and showy. Bracts of the involucre brown, their edges fringed or torn. Leaves, lance - shape, entire, seldom lobed, slightly toothed, not spiny. June to September.
This species may be known by the marginal flowers of the head being larger than the central, without stamens and pistils. In waste grounds, as fields, also in ballast near our Eastern seaports, New York and New Jersey and parts of New England.