生活型

herb

形態特徵

• Perennial suffrutescent erect herbs with long stoloniferous rhizomes. Stems terete, 40–110 cm tall, rarely flexuous, glabrous or scarcely pubescent upward, branching upward.
• Radical leaves withering at anthesis. Cauline leaves distinctly 3-nerved, nearly glabrous or scarcely puberulous on both surfaces, middle leaves 4–12 cm long, 2–4 cm broad, ovate-oblong or oblong-lanceolate, apex acuminate or attenuate acuminate, base sharply narrowed, attenuate-cuneate, subsessile or short-petiolate, margins serrate with 4–8 pairs of shallow teeth; upper leaves smaller.
• Heads few to numerous in loose corymbs, 1.5–2 cm across, peduncle 2–10 mm long. Involucre campanulate to hemispheric, 3–4.5 mm tall, 4.5–6 mm across, bracts 3- or 4- seriate, green or purplish, herbaceous, somewhat scarious, 1-nerved adaxially, narrowly lanceolate, apex obtuse to acute, entire, glabrous or scarcely hirsute on outside, margins usually ciliolate, inner bracts gradually longer, 3–4.5 mm long, 0.5–1 mm wide; outer bracts 1.7–2 mm long, 0.8–1.3 mm wide. Ray florets 10–15, ligules usually white, rarely purplish, 5–8 mm long, 0.8–1.4 mm wide. Disc florets, yellow. Pappus dirty white or reddish, 4–5 mm long at maturity.
• Achenes lanceolate-obovate, compressed, pale brown, 2–3 mm long, 0.7–1.2 mm wide, sericeous.
• Chromosome number, 2n = 18, 36 , 37(Soejima & Peng, Bot. Bull. Acad. Sin. 39: 299–302. 1998).

物候

Fl. Sep-Feb.

分布

• 台灣 : mountains, 1,500–2,500 m.
• 世界 : Distributed widely in eastern Asia, Siberia, Mongolia, southeastern to northeastern China, South Korea and Japan.

引證標本

TAICHUNG: Kukuan, Peng 8730. CHIAYI: Mt. Alishan, Kitamura s. n. 1932; Tatachia Saddle to Paiyunshanchuang, Peng 8943. KAOHSIUNG: Chishan, Mt. Neiyingshan, Hosokawa 474.

參考文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 849. 1998.  (Fl. Taiwan 2nd edit.)