生活型

herb

形態特徵

• Annual or biennial, more or less cobwebby when young, soon glabrate; stems branched apically and often also toward base, 10–60 cm tall.
• Leaves slightly fleshy, pinnately cleft to undulate, irregularly toothed, 3–5×1.5–2 cm; lower leaves petiolate, median and upper leaves sessile, semi clasping.
• Heads narrowly cylindric, discoid, few to many in dense terminal corymbs; involucre 8–10 mm long, calyculate, basal bracteoles very small, lanceolate, 2–3 mm long, blackish at tip; involucral bracts narrowly linear, glabrous, acute, black tipped. Florets yellow, all tubular, corolla 5–6 mm long, tube 3–4 mm long, limb infundibuliform; lobes ovate, 0.3 mm long, obtuse.
• Achenes terete, appressed pubescent, 1.5–2.5 mm long. Pappus 6–7 mm long, white.

分布

• 台灣 : around villages, 2,000–2,500 m.
• 世界 : Throughout temperate Eurasia and North Africa; widely adventive elsewhere.

引證標本

TAICHUNG: Wuling Farm, Peng 8002; Lishan, Peng 6258. NANTOU: Meifeng, Chen 481. HUALIEN: Errtzeshan, Peng 5878; Tayuling, Peng 12416.

引用文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 1059. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)