Chamaemelum

Annual or perennial herbs. Leaves cauline, alternate, pinnatifid or pinnatisect. Capitula radiate or discoid, terminal, solitary or in lax corymbs, pedunculate; involucral bracts in 2–4 series, unequal, herbaceous with broad scarious margins; receptacle convex with broad-oblong scales. Ray florets female, 1-seriate, ligulate, white or yellow; style branches linear, recurved, with papillose apices. Disc florets bisexual, tubular; corolla 5-lobed, basally saccate, pale yellow; anthers acute at base, with an ovate apical appendage; style with broad-linear, truncate branches, apices papillose. Cypselas obovoid, somewhat compressed, glandular, ribbed on the inner surface; ray cypselas (if produced) usually slightly smaller than disc cypselas; pappus absent.