生活型

herb

形態特徵

• Herb or shrubs, erect, stems pubescent, villous.
• leaves opposite, petiole 7-15 mm long, blade elliptic, apex acuminate, base attenuate, margin serrate.
• capitulum turbinate, 5-7 mm in diameter, homogamous, comprising solely of disc florets, arranged as cymose panicles, involucral bracts linear to lanceolate, apex acute, ciliate, ca. 2.5-4 mm long, pappus scabrous, 2.5-3 mm long, attached on a hyaline ring; corolla 5-lobed at apex, abruptly narrowed into a tube in the lower half, whitish, the lobes ciliate adaxially ly, anthers ca. 0.75 mm long; style bifid, exerted.
• achenes 5-ribbed, ribs hispidulous.

分布

• 台灣 : naturalized in northern and central Taiwan in recent years.
• 世界 : native in Mexico and is introduced into Pacific islands including Australia, Hawaii and New Zealand.

引證標本

Taiwan. Taipei City, Taipei Botanical Garden (cultivated), 10 Apr 2008, M.-J. Jung 2670 (TAIF). Taipei Co., Wulai Township, Fushan, 23 Feb 2002, P.-H. Lee et al. 1468 (TAIF); Taoyuan Co., Fuhsing Township, Mingchih, 9 May 2006, M.-J. Jung 1439 (TAIF). Nantou Co., Yuchih Township, Sun Moon Lake, 17 Mar 2008, M.-J. Jung 2461 (TAIF).

參考文獻

• Ming-Jer Jung, Tian-Chuan Hsu, Shih-Wen Chung and Ching-I Peng, Taiwania 54(1): 76-81. 2009.