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Dinghushan | Family List | Compositae | Bidens

Bidens biternata (Lour.) Merr. et Sherff.


Description from Flora of China

Coreopsis biternata Loureiro, Fl. Cochinch. 2: 508. 1790; Bidens chinensis Willdenow; B. robertianifolia H. Léveillé & Vaniot.

Annuals. Stems erect, 30-150 cm tall, subtetragonal, loosely crisp pilose, branched in upper portion. Leaves cauline; median leaves opposite, petiole 3-5 cm, blade 9-15 cm, prominently soft pubescent on both surfaces, once or twice divided into pinnate leaflets, terminal segment ovate, shortly acuminate, rather prominently toothed, lateral segments ovate, sometimes lower one pinnatifid; upper leaves gradually smaller, opposite or alternate, bipinnately parted. Capitula radiate or discoid, 7-10 mm in diam.; peduncle 1.5-5.5 cm; phyllaries 8-10, 1-seriate, herbaceous, linear, 3-6.5 mm, acute; outer chaff calycular bracts 5-6 mm, margin hyaline. Ray florets 0-5, sterile; lamina yellow, ca. 5.5 × 2.5-3 mm, tube 1.2-1.5 mm. Disk florets bisexual, fertile; corolla 4-5.5 mm, tube 1.2-2 mm. Achenes linear, 9-19 × ca. 1 mm, compressed, 4-angled, shortly strigose; pappus awns 3 or 4, 3-4 mm. Fl. Sep-Nov.

Roadsides, waste fields; below 1300 m. Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Hainan, Hebei, Henan, Hubei, Hunan, Jiangxi, Liaoning, Shaanxi, Shandong, Shanxi, Taiwan, Yunnan, Zhejiang [Africa, Asia, Oceania].

生活型: 草本

栽培植物: 野生

特征: 与鬼针草近似,但叶为2回三出复叶,小叶两面均被稀疏柔毛,舌状花白色

生境: 生于旷野草地

用途: 全草入药,清热解毒、活血散瘀、利尿、止泻,治感冒发热、腹泻、风湿骨痛、跌打、蛇虫咬伤、疮疖等;又作杀虫农药

门中名: 种子植物门

亚门中名: 被子植物亚门

纲中名: 双子叶植物纲

中文别名: 复三叶鬼针草


Related Objects  

Flora of China  
  • Illustration
  • Illustration
    Photos by The Biodiversity of the Hengduan Mountains Project  
  • Image File (Susan Kelley)
  • Image/JPEG

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