生活型

herb

形態特徵

• Perennials from a thick crown; taproot one or roots several, thick; spreading hispid toward base; stems few to several, erect or ascending, 15–60 cm tall, branched above or simple in small plants, with few to several widely spaced bracteoles.
• basal leaves oblanceolate, (4-)8–15(–30)×1–3(–7.5) cm, remotely toothed or pinnatifid.
• Inflorescence of few to several heads terminating branches; heads rather showy, ligules bright yellow; involucral bracts minutely ciliolate at apex, otherwise glabrous or coarsely retrorsely hispid on midrib, imbricate, in several series, outer bracts short, blunt-tipped, progressively longer inward, innermost narrowly lanceolate, 10–20 mm long, narrowly attenuate; palea long, linear, attenuate, membranaceous.
• achenes 3–7 mm long, more or less terete, longitudinally ribbed, ribs barbellate, beak slender, 7–10 mm long, or outer ones only short-beaked; pappus tawny, in 2 distinct rows; outer bristles 3–6 mm long, barbellate or sparingly plumose, inner ones 9.5–12.5 mm long, plumose.
• Chromosome number, 2n = 8 (Peng & Hsu, 1978).

分布

• 台灣 : widely naturalized in the central mountain region, common in meadows, on roadsides and around mountain farms, 1,700–2,400 m.
• 世界 : Native of Europe, adventive in North America, northern Africa, Australia and Japan, usually in weedy habitats.

引證標本

ILAN: Nanshan to Matang, Chen 215; Ssuyuan, Peng 5558. MIAOLI: Kuanwu, Peng 9403. TAICHUNG: Lishan, Jeng 1741; Yunlin Lodge, Liu 968. NANTOU: Meifeng Farm, Peng 622; Tsueifeng, Peng 2322. HUALIEN: Songhsuehlou to Tayuling, Peng 13129.

引用文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 991. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)