Wireweed

Leaf blades mostly 9–30+ × 1–2(–5+) mm. Peduncles often wiry, ± hirsutulous to pilosulous near heads. Involucres 4–7+ mm. Ray corollas: tubes 1.5–2+ mm, laminae narrowly elliptic, 0.3–1 mm. Disc corollas: tubes 0.2–0.4 mm, throats 1–1.5 mm, lobes 0.1–0.3 mm. Cypselae 4–5 mm; pappi 1–4+ mm or much reduced (rays). 2n = 18.