生活型

herb

形態特徵

• Stems 50–100 cm long, robust, erect, densely white villous and crisp puberulent at base, much branched.
• Lower cauline leaves thin, spatulate-oblong, 9–25×4–6 cm, apex acute or obtuse, base contracted and attenuate into winged petiole, margins irregularly doubly serrate, mucronulate, densely white villous on both surfaces, upper surface green, lower surface pale; median leaves slightly smaller, oblong, apex obtuse or sometimes acuminate.
• Heads solitary, 15–18 mm broad, long pedunculate, subtending leaves many, linear-lanceolate, 2–5 cm long, apex obtuse, base narrow. Involucres cupuliform, 7–8 mm long, outer bracts leaf-like, scarious near base, white pilose without, inner ones narrowly oblong, scarious, obtuse. Corolla of outer florets tubular, 1.5 mm long, central florets tubular, 2.5 mm long, limb 1 mm long.
• Achenes linear, 4.5–5×1 mm.

分布

• 台灣 : disjunctly distributed in the northern mountains and on Lanyu Is., rare.
• 世界 : Temperate regions from Asia to Europe.

引證標本

HSINCHU: Litungshanchuang to Sankuang, Wang & Lin 1942. TAITUNG: Lanyu Is., Langtao, Leu 1383, Peng 10664.

參考文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 893. 1998.  (Fl. Taiwan 2nd edit.)