生活型

herb

形態特徵

• Stems 20–150 cm long, glabrous, branched.
• Lower cauline leaves lanceolate; median leaves oblong-lanceolate, dentate or more often 3–5-partite, 4–13 cm long (petioles 0.8–2.5 cm long, more or less winged) terminal segments larger, oblong-lanceolate, dentate, lateral segments of 1–2 pairs, oblong-lanceolate, spreading; upper leaves smaller, dentate or trifid.
• Heads discoid, 7–8 mm across; peduncles 4–15 cm long. Involucral bracts herbaceous, 5–10, oblanceolate, 1.5–4.5 cm long in fruit, outer palea oblong, scarious, 9–11 mm long. Florets all bisexual, corolla tubular, 4–4.5 mm long, apex 4-dentate.
• Achenes compressed, brown, 7–11 mm long, retrorsely spinulose on margins and ribs, 2- or sometimes imperfectly 3- or 4-awned, pappus awns erect, 3–4 mm long.

分布

• 台灣 : moist mountain trails in the north, rare.
• 世界 : Eurasia, northern Africa and Australia.

引證標本

TAIPEI: Wanli, Kao 10041; Tatunshan, Peng 2339. ILAN: Sunglohu, Chen 7149.

引用文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 870. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)