Galinsoga

Annual herbs. Leaves opposite, sessile to petiolate, simple, entire to dentate. Capitula campanulate to hemispherical, in loose terminal cymes, pedunculate; involucral bracts 1–3-seriate, imbricate, unequal, herbaceous to scarious; receptacle conical, with narrow 2- or 3-lobed scales. Ray florets 1-seriate, female, fertile, ligulate, white to purplish-red; style with filiform branches. Disc florets bisexual, fertile, tubular; corolla funnel-shaped, 5-lobed, yellow, rarely purplish; anthers sagittate at base, apex with a short rounded appendage, pale; style bilobed, branches flattened, papillose, with acute terminal appendages. Ray cypselas obconical to obpyramidal, curved, compressed, enclosed by a group of connate involucral bracts and receptacle-scales, pappus of short bristles or absent; disc cypselas obconical to subterete, 4- or 5-angled, pappus of fimbriate, laciniate or aristate scales (sometimes reduced or absent).