Greater Tickseed

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.

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

Coreopsis major is a North American species of tickseeds, in the family Asteraceae. It is native to the eastern United States, from Louisiana to Virginia and as far inland as Indiana and Ohio. There are isolated populations in Pennsylvania, Long Island, and Massachusetts, most likely escapes from cultivation.

Coreopsis major is a perennial herb up to 90 cm (3 feet) tall with yellow flower heads.

Flowers Leaves