Stems rather stout, or slender and stiff, smooth and usually glaucous, branched above or simple, 2 to 4 feet high, from a thick, perennial root. Leaves thick, smooth, slightly rough on the entire or slightly toothed margins, the upper ones sessile and clasping the stem by a heart-shaped base, lanceolate to oblong-lanceolate in shape, 1 to 4 inches long, one-third to 2 inches wide; the lower and basal leaves gradually narrowed into margined petioles; the leaves of the branches visually reduced in size. Heads of flowers numerous, about 1 inch broad; bracts of the bell-shaped involucres rigid, pointed, green-tipped, appressed and overlapping in several series. Ray flowers fifteen to thirty in number, blue or violet; pappus tawny.
In dry or sandy soil of open fields and thickets, Maine to Ontario and Saskatchewan, south to Alabama, Louisiana, Missouri and Colorado. Flowering from late August to October.
Memoir 15 N. Y. State Museum
Smooth Aster - Aster laevis