White-wooly
plants, erect leafy stems, 2-9 dm tall; leaves entire, alternate, lanceolate to
linear, 12 cm long and 1.5 cm wide, sessile, gray wooly beneath, green above,
margins usually revolute; heads numerous in a terminal corymb, 4-15 cm broad;
involucre almost globose, bracts pearly white in several series; achenes with
little bumps; pappus of capillary bristles; staminate flowers tubular with
undivided style; pistillate flowers tubular-filiform, style bifid; receptacle
naked; very common in open places.