生活型

herb

形態特徵

• herb.
• Leaves commonly sparsely hairy on midrib on lower surface, otherwise generally glabrous, or sometimes completely so, oblanceolate, 6–40×0.7–15 cm, somewhat runcinate-pinnatifid or lobed (terminal lobe tending to be larger than others), tapering to a narrow, scarcely or obscurely winged petiolar base, but leaves varying to deeply cleft and with a small terminal segment; scapes 5–50 cm tall, glabrous or somewhat villous, especially upward.
• Involucre mostly 1.5–2.5 cm long; inner bracts mostly 13–20, usually not or scarcely corniculate, at first erect, finally reflexed, mature achenes and pappus then forming a conspicuous ball; outer bracts reflexed, slightly shorter and scarcely wider than inner; achenes 3–4 mm long, pale-brown or stramineous, muricate apically or sometimes to near base, beak 2.5–4 times as long as body.
• Chromosome number, 2n = 24 (Peng & Hsu, 1978).

分布

• 世界 : Native of Eurasia, now a cosmopolitan weed of temperate areas.

引證標本

TAIPEI: Taipei City, Peng 12482. TAOYUAN: Lungtan, Peng 13640. TAIHUNG: Lishan, Chiu 3298. CHIAYI: Alishan, Leu 168.

參考文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 1079. 1998.  (Fl. Taiwan 2nd edit.)