翅柄球菊 chi bing qiu ju

Ethulia divaricata Linnaeus, Syst. Nat., ed. 12, 2: 536; Mant. Pl. 1: 110. 1767; Poilania laggeroides Gagnepain.

Herbs, annual. Stems 10-20 cm tall, branched, glabrous, winged; wings entire. Leaves sessile, linear or linear-oblong, 20-65 × 2-7 mm, both surfaces glabrous, base narrowed into petiole, margin entire or inconspicuously serrulate, apex obtuse. Capitula solitary or 3-6, 6-8 mm in diam., in sparse corymbs; peduncles 5-17 mm, narrowly winged. Involucre ca. 5 × 7 mm; phyllaries in 4 or 5 series, longer than corollas, apex purplish red, outer ones ovate, ca. 3.5 mm, membranous or margin dry membranous, glabrous, margin serrulate, apex acuminate, inner ones ovate-oblong, ca. 5 mm, dry membranous, glabrous. Corollas of marginal florets tubular, 2-2.5 mm, 3-lobed; corollas of central florets 3-3.5 mm, 5-lobed. Achenes oblong or obovate, ca. 1 mm, gland-dotted. Fl. Dec-Feb.

Waste fields, farmlands; low elevations. Hainan [India, Indonesia, Sri Lanka, Vietnam].