Erect, branching, annual herb 0.2–0.6 (–1.4) m high; stems slender, moderately covered with appressed hairs. Leaves sessile, stiff, narrowly linear, (20–) 40–50 mm long, (1.0–) 1.5–2.0 mm wide, entire, blunt; both surfaces moderately densely appressed-pilose; hairs 0.5–0.8 mm long, white, 2-celled with basal cell thickened, often seated on rosette of tiny epidermal cells, upper cell narrower, tapering. Stems and involucral bracts with hairs as for leaves. Capitula in lax, open dichasial inflorescence (synflorescence) on slender peduncles 40–50 mm long; involucre obconical, 5 mm long, 5 mm wide. Disc florets 20–22, yellow. Achenes obovate, 3.5–4.0 mm long, 2.0–3.0 mm wide, weakly keeled, with a spreading membranous wing throughout or only in upper part (and then wing thickened and revolute below). Pappus a shallow cup with 2 short soft awns.
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