生活型

herb

形態特徵

• Plants coarse, densely hirsute, erect, branched, 30–100 cm tall; stems often reddish.
• Leaves 3–9 cm long, sessile, oblong obovate to lanceolate, hirsute, acuminate, base narrowed, margins irregularly and rather coarsely spinulose-toothed.
• Heads ovoid, 6–7×5–6 mm, larger in fruit; peduncle hirsute, ca. 1 cm long; bracts green, hairy, as long as or exceeding florets; ligule of ray florets ca. 1.5 mm long.
• Achenes black, ca. 3 mm long, apically hairy.

分布

• 台灣 : abandoned ponds and roadsides around Hualien harbor, probably introduced via merchant ships from southeast Asia.
• 世界 : Malaysia and the Philippines.

引證標本

HUALIEN: Chen 3381.

參考文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 937. 1998.  (Fl. Taiwan 2nd edit.)