Stems zigzag, corymbosely branched above, smooth or minutely pubescent, usually leafless below, 1 to 3 feet high. Leaves thin, broadly oblong, sharp pointed at the apex, narrowed to a somewhat cuneate, sessile base, coarsely and sharply toothed on the margins, smooth or pubescent above and pubescent on the veins beneath, 3 to 6 inches long, one-half to 11/2 inches wide, the upper leaves often closer together than the lower ones. Heads of flowers several or numerous, 1 to 1/12 inches broad; bracts of the nearly hemispheric involucre very narrow and long pointed, the outer ones much shorter. Ray flowers twelve to eighteen in number, one-half to two-thirds of an inch long, white, sometimes purplish; pappus soft, fine and nearlv white.
Memoir 15 N. Y. State Museum
Mountain Or Whorled Aster - Aster acuminatus