Melampodium

Annuals, 15–100+ cm. Leaf blades ± rhombic to lanceolate, 40–150+ × 25–95+ mm, lengths 1–2(–3+) times widths, margins coarsely toothed or entire. Peduncles 1–12+ cm. Outer phyllaries 5, connate ¹/4–¹/3 their lengths, ovate to orbiculate, 3.5–6 mm. Ray florets 8–13; corollas yellow-orange, laminae oblong-elliptic, 3.5–7+ × 1.6–3+ mm. Disc florets 40–70+. Fruits 2.8–4+ mm. 2n = 24.

Dysodium divaricatum Richard in C. H. Persoon, Syn. Pl. 2: 489. 1807