Galinsoga ciliata (Raf.) Blake
Branched annuals, 20-70 cm tall, stems sparingly pilose basally, branchlets and peduncle densely strigose and pilose, often with intermixed red glandular capitate hairs. Petiole 3-7 mm long. Leaves ovate to lanceolate, coarsely toothed, 2.5-7×1.2-5 cm. Heads numerous, pedunculate; involucral bracts sparsely capitate glandular, unequal, in two series, outer bracts ca. 2×1 mm, inner bracts ca. 3.8-4×2 mm, margins scarious, entire to minutely laciniate. Ray florets 5 (rarely 4 or 8); ligules obovate to quadrangular, ca. 0.8-0.9×0.5 mm; tube 0.8-0.9 mm long, densely patently hairy; achenes black, 1.3-1.8 mm long, strigillose; pappus scales 10-20, elliptic to obovate, often aristate, fimbriate, white to brownish, to 1.5 mm long. Disc corollas yellow, 0.8×0.4 mm long; achenes black, obconical, 4 or 5 angled, 1.3×5 mm, brownish strigillose; pappus scales ca. 20, buff, oblanceolate, 0.9-1.5×0.2-0.3 mm long. Paleae narrowly oblong lanceolate, ca. 2.5 mm long, entire to irregularly and shallowly trifid.
TAIPEI: Yangmingshan National Park, Chutzuhu, Liu 229; Pingtengli, Peng 11344. HSINCHU: Shihtoushan, Peng 14849. NANTOU: Chitou, Chiu 3140.
Native of tropical America, now a cosmopolitan weed. Taiwan, naturalized in the northern and central parts of the island along roadsides, in cultivated fields and at borders of disturbed forests and plantations, 200-1,300 m.