生活型

herb

形態特徵

• Herbs, shortly rhizomatous, stem short, leaves rosetted, blade obovate to spathulate, base petiole-like, apex acute, sparsely hirsute, margin entire to shallowly dentate.
• Capitulum turbinate, solitary, 3-6 mm in diameter, peduncle unbranched, 3-7 cm long, with small bracts; involucral bracts linear, apex acute, margin hyaline, outer bracts ca. 0.5 mm long, pubescent; inner bracts glabrous to pubescent, 0.7-0.8 mm long, ray florets 2-seriate, pistilate, ligules whitish to pale yellow, ca. 0.7 mm long, disc florets bisexual, corolla 5-lobed, whitish to pale yellow, ca. 1.3 mm long, anthers ca.0.3 mm long; achene uniform, pubescent, pappus 1-seriate, thin, with fragile bristles, subequal to corolla.

分布

• 台灣 : in grasslands and along roadside in Taipei City, northern Taiwan.
• 世界 : native in South America; naturalized to Australia, Hawaii and Puerto Rico

引證標本

Keelung City, Cidu District, Padu, 9 Jul 2008, M.-J. Jung 3054 (TAIF). Taipei City, Zhongshan District, Dajia Riverside Park, 19 Apr 2008, M.-J. Jung 2699 (TAIF); Nangang District, Academia Sinica Campus, 7 Nov 2005, M.-J. Jung 1313 (NCKU), 28 Jan 2006, M.-J. Jung 1351 (NCKU), 19 Dec 2007, M.-J. Jung 2075 (TAIF).

引用文獻

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