An erect, perennial herb, 1 to 2 feet high, stems slender, striate, smooth or more or less pubescent, especially below. Leaves smooth or somewhat hairy, opposite; the basal and lower stem leaves spatulate or oblong, entire, sometimes with a pair of lateral lobes, 2 to 6 inches long, on slender petioles; upper stem leaves few, lanceolate to oblong, nearly sessile. Heads of flowers usually few, 11/2 to 21/2 inches broad, showy, bright yellow, borne on long, slender peduncles often 8 to 12 inches long. Involucres rather flattened, their bracts ovate-lanceolate, in two series, the outer narrower than the inner but nearly as long. Ray flowers six to ten in number, wedge-shaped, three to seven-notched at the apex, forming a single row around the darker yellow disk. Achenes oblong, winged on the edges, with two short teeth projecting from the summit, giving it somewhat the appearance of a bug. It is from this character of the achene that the generic name Coreopsis, meaning " buglike," is derived.

In moist or dry soil, Ontario to Michigan, south to New York, Virginia, Florida, Louisiana and Missouri. Flowering from June to August.

Memoir 15 N. Y. State Museum

Plate 260

A. Lance Leaved Tickseed   Coreopsis lanceolata

A. Lance-Leaved Tickseed - Coreopsis lanceolata