Eclipta

Annual to perennial herbs. Leaves sessile, opposite, simple. Capitula campanulate or hemispherical, upper-axillary, single or paired, pedunculate; involucral bracts 2-seriate, equal or outer longer, herbaceous; receptacle flat or slightly convex, with scales. Ray florets usually in several series, female or sterile, ligulate; ligules narrow, entire or 2-lobed, white or yellow; style shortly bilobed, branches smooth, obtuse, papillose. Disc florets bisexual, usually fertile, c. campanulate, white or yellow; corolla 4- or 5-lobed; anthers obtuse at base, with short ovate apical appendages; style branches oblong with acute papillose terminal appendages. Cypselas weakly to strongly dimorphic, sometimes winged, tuberculate, outer ones triangular in section, inner ones subterete or 4-angled; pappus a short entire or toothed crown, 2 short awns or absent.