生活型

herb

形態特徵

• Annual herbs from tap roots. Stems erect, white woolly, branching apically, 30–60(–90) cm tall.
• Leaves cauline, thin, 1-nerved; lower leaves withering before anthesis, median ones congested, linear, 4–5×2.5–7 mm, apex acute, auriculate, semi-amplexicaul, margins entire, upper surface green and short crisp pilose, lower surface densely white woolly; upper leaves similar in size.
• Heads numerous, in terminal congested corymbs. Involucre globose-campanulate, ca. 4×6–7 mm; bracts 5-seriate, scarious, yellowish. Outer florets filiform, corolla ca. 2.5 mm long, style exserted; corolla of central floret ca. 3 mm long. Receptacle pitted.
• Achenes oblong, ca. 0.5 mm long, minutely punctate. Pappus white, ca. 3 mm long, deciduous.

分布

• 台灣 : base of slopes, roadsides, 1,500–2,500 m, common.
• 世界 : Southern and southeastern Asia, Japan, Korea and China.

引證標本

ILAN: Szuyuan, Peng 5568. TAOYUAN: Paling, Peng 12102. MIAOLI: Chunghsuehshan, Tateishi et al. 21218. TAICHUNG: Wuling, Chika Lodge, Yang s. n. 1995; Hoping, Tahsuehshan Forest Road, Liao 1907. NANTOU: Tzuchung, Peng 11413; Zhiyuan-zhuang, Ohashi & Nemoto 17234. CHIAYI: Alishan, Yen 4515. HUALIEN: Errtzeshan, Peng 5886; Mukuashan, Peng 7257.

參考文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 975. 1998.  (Fl. Taiwan 2nd edit.)