Coreopsis major var. rigida (Nuttall) F. E. Boynton; C. major var. stellata (Nuttall) B. L. Robinson

Perennials, 30–90 cm. Internodes (± mid stem) 5–11 cm. Leaves: petioles 0–1 mm; blades simple or 3-foliolate, simple blades or leaflets ± lance-elliptic to narrowly lanceolate, 25–55(–100+) × (4–)6–15(–30+) mm (seldom lobed). Peduncles 2–6+ cm. Calyculi of 7–8 oblong to linear bractlets 3–6 mm. Phyllaries 8, lance-oblong to lance-ovate, 6–8 mm. Ray laminae 12–30+ mm. Disc florets 40–80+; corollas yellow (often drying blackish to purplish), 6–7 mm. Cypselae obovate to oblong, 4–5 mm. 2n = 26, 78, 104.

Flowering May–Aug. Oak barrens, road clearings, wooded bottoms; 300–800 m; Ala., Fla., Ga., Ind., Ky., La., Mass., Miss., N.Y., N.C., Ohio, Pa., S.C., Tenn., Va., W.Va.