生活型

herb

形態特徵

• Perennial scandent herbs. Stems elongate, much branched, 2–5 m long, more or less pubescent while young, becoming glabrous.
• Petiole 1.2–2 cm long, not winged. Cauline leaves triangular, usually 8–11×3.5–6 cm, apex acuminate, base truncate to hastate, margins irregularly incised-dentate or subentire, lower leaves often lobed, pubescent on both surfaces.
• Heads many, in paniculate corymbs, terminal and lateral, branches much spreading, densely pubescent. Heads 13–14 mm across, peduncle 5–15 mm long. Involucre cylindric, 5–6×5 mm, tubular, bracts 8, lanceolate to narrowly oblong, acute. Ray florets: corolla yellow, ca. 8.5–9×2 mm. Disc florets: corolla 6–6.5 mm long, lobes 5, 1 mm long.
• Achenes cylindric, 3.2–4×0.8 mm, glabrous. Pappus 5–6 mm long, white.
• Chromosome number, 2n = 20 (Peng & Hsu, 1978).

分布

• 台灣 : mountain slopes and stream banks, 400–2,000 m.
• 世界 : Southern Asia, Thailand, Indo-China, Japan, the Philippines and China.

引證標本

ILAN: Nanhutashan, Kao 8615. TAICHUNG: Techi, Shen 1817. NANTOU: Patungkuan, Chen 983. YUNLIN: Shihpi, Peng 16759. KAOHSIUNG: Tengchih, Liu 306. HUALIEN: Taroko, Peng 17026.

引用文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 1056. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)