Northeastern Asian Flora
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Bidens biternata (Lour.) Merr. & Sherff   (redirected from: Bidens kotschyi Sch.Bip.)
Family: Asteraceae
[Bidens chinensis (L.) Willd., moreBidens kotschyi Sch.Bip., Bidens pilosa var. chinensis L., Bidens robertianifolia H.L?. & Vaniot, Coreopsis biternata Lour.]
Bidens biternata image
  • Japan Flora
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Japan Flora: Stems 30-150 cm. long, subtetragonous, loosely crisped-pilose; median leaves 9-15 cm. long inclusive of the 5-cm.-Iong petiole, prominently soft-pubesccnt on both sur­faces, once or twice pinnately parted, the terminal segments ovate, short-acuminate, ratlier prominently toothed, the lateral segments ovate, sometimes pinnatifid in the lower ones; in- volucral bracts 8-10, linear, 3-6.5 mm. long, acute, the outer chaff 5-6 mm. long; ligulate florets absent or 1-5, sterile, the corollas yellow, 55 nun. long, 2.5-3 mm. wide; achenes lin­ear, 9-19 mm. long, about 1 mm. wide, compressed, 4-angled, short-strigose, the awns 3 or 4, 3-4 mm. long. Sept.-Nov. Wet places and roadsides; Honshu (Kanto Distr. and westw.),Shikoku, Kyushu. Korea, Manchuria, China, Formosa, In­dia, Malaysia, Australia, Asia Minor, and Africa.

var. mayebarae (Kitam.) Kitam. Lower stems 50-60 cm. long; leaves simple, ovate-oblong, 5-13 cm. long, 2.5-6.5 cm. wide, acute, truncate-rounded at base, serrulate, the petioles winged in upper part; achenes very densely setulose. Near seashores. Kyushu (Higo Prov.)

Bidens biternata
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Development supported by College of Agriculture and Life Sciences of Seoul
National University and Korea National Arboretum of Korea Forest Service.
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