生活型

herb

形態特徵

• Stems erect, 25–150 cm long, densely pubescent, branched above middle.
• Lower leaves thin, petiolate, ovate to ovate-oblong, 7–23 cm long, apex acute to obtuse, base mostly rounded, sometimes shallowly cordate or truncate, rarely short cuneate, margins irregularly mucronulate-dentate, pubescent on both surfaces, upper surface green, lower surface pale and glandular-punctate, petiole shorter or as long as blade, short winged; median leaves oblong, acuminate at apex, cuneate-attenuate at base; upper leaves much smaller, oblong or oblong-lanceolate, sessile.
• Heads 6–8 mm across, terminal and solitary on branches or in subracemose inflorescences, nodding at anthesis, subtending bracteal leaves 2–4, lanceolate, reflexed, 2–5 times as long as head; involucre ovoid, 6–8×5–6 mm, bracts 4-seriate, imbricate, outermost bracts shortest, broadly ovate, cuspidate, herbaceous, median bracts oblong, rounded, innermost bracts linear, obtuse. Corolla of outer florets cylindric, 1.5 mm long, 4-lobed; florets of central florets cylindric, 3–3.5 mm long, limb 5-lobed.
• Achenes cylindric, 3.5 mm long.

分布

• 台灣 : in broadleaf forest and in mixed Chamaecyparis and broadleaf forests in the north, 600–1,600 m.
• 世界 : China, Japan and the Ryukyus.

引證標本

TAIPEI: Tatunshan, Tateishi, Murata & Nemoto 17501; Hsiangtienchih, Chen 148. ILAN: Hapen, Wang 1296. TAOYUAN: Lalashan, Peng 14609. HSINCHU: Yuanyang Lake, Shen 336.

引用文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 895. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)