Melampodium humile Swartz, Prodr., 114. 1788

Plants 10–20(–30+) cm. Stems decumbent to erect. Leaf blades oval to lyrate, 10–30(–45) mm, faces ± pilosulous to sparsely sericeous, gland-dotted. Fruits strongly compressed, ± cuneate, 2–3(–4) mm, usually 3-ribbed, terminal spines 2, divergent, 2–3(–4) mm, often 1 ± uncinate, prickles ± uncinate, mostly along 2 ribs and around apices.

Flowering all year. Disturbed, often sandy sites; 0–10+ m; introduced; Ala., Fla., S.C.; West Indies; also introduced in Central America, South America.