生活型

herb

形態特徵

• Herb, annual or perennial, taproot one or roots several, stems erect.
• basal leaves oblanceolate, toothed, glabrous to hispidulate, hispid 0.3-0.5 mm long.
• Inflorescence corymbs, of several heads terminating branches, receptable paleate, ligules yellow, involucral bracts lanceolate, apex acute or acuminate, margin hyaline, glabrous, ca. 7-nerved, outer bracts 3-5.5 mm long, inner bracts 8.5-12 mm long; chaff linear, apex acuminate, membranous, 1-nerved, 9.5-10 mm long.
• Achene ellipsoid, longitudinally ribbed, ca. 16 ribs per achene, ribs scabrid, marginal achene unbeaked; central achene beaked or not, unbeaked achene ca. 2.7 mm long, beaked achene ca. 7.5 mm long; pappus plumose sparingly, ca. 7.5 mm long, branch ca. 2 mm long.

分布

• 台灣 : at roadside and waste places in park of Taichung Harbor.
• 世界 : native to Europe and naturalized in Japan, North America, and Mexico.

引證標本

Taichung Co., Chinshui Town, Taichung Harbor Park, 30 Mar 2007, M.-J. Jung 1611 (TAIF).

參考文獻

• Ming-Jer Jung, Tien-Chuan Hsu and Shih-Wen Chung, Taiwania 53(2): 230-235. 2006.