生活型

herb

形態特徵

• herb.
• Leaves many, pilose on both surfaces when young, becoming glabrate, oblanceolate to oblanceolate-linear, 8–20×1–4 cm, apex obtuse-mucronulate, base attenuate into winged petiole, pinnately cleft, segments of 4 or 5 pairs, deltoid, obtuse, terminal lobes deltoid or hastate. Scapes several, shorter than leaves or equal, densely hairy.
• Heads 35–45 mm wide; involucre 15–16 mm long, outer bracts linear or linear-lanceolate, 7–9×1.5–2 mm, corniculate, margins white hyaline, apex slightly pilose, inner ones linear-lanceolate, corniculate; corolla yellow, marginal florets 17–21 mm long, tube pubescent or not.
• Achenes oblong, brown, ca. 3.5×*1.2 mm, grooved, densely warty, apex muricate, beak 7–9 mm long. Pappus 6.5–7 mm long.
• Chromosome number, 2n = 16 (Peng & Hsu, 1978).

分布

• 台灣 : in littoral areas north of Taichung.
• 世界 : Japan, the Ryukyus, Korea, Manchuria and eastern China.

引證標本

TAIPEI: Tanshui, Liao 1751; Sanchih, Niucheliao, Peng 10366. TAOYUAN: Chuwei, Liao 1752. HSINCHU: Hsienchiaoshih, Hosokawa s. n. 1941. MIAOLI: Chungkang, Hsu 5297. TAICHUNG: Su s. n. 1975.

引用文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 1079. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)