生活型

herb

形態特徵

• Stoloniferous, biennial herbs from tap roots; stem solitary, erect, 10–60 cm tall, simple or branched above, crisp puberulent.
• Petiole 1.5–2 cm long, median and lower cauline leaves 3–15×2–6 cm, green on upper surface, lower surface pale, puberulous on both surfaces, pinnate or sub- bipinnatiparted, segments spreading, 4 to 6 pairs, linear-oblong, toothed or incised, white hairy, acute to obtuse, thinly membranaceous.
• Heads usually many, rarely few, 0.8–1 cm across, nearly umbellately arranged; peduncle 13–22 mm long, slender, bractless. Involucre cupuliform, 3×5 mm, ecalyculate, bracts in 1 series, narrowly oblong, acuminate. Ray florets ca. 13, corolla tube 2.5 mm long; rays oblong, 2 mm long, 1 mm broad. Involucral bracts 13, uniseriate, narrowly oblong, 3–4×1 mm, herbaceous, ciliate, with hyaline margins, glabrous externally. Disc florets: corolla yellow, 3.5 mm long, tube 2.5–3.1 mm long, lobes 5, ovate-triangular, 0.5 mm long, acute. Anthers oblong, 0.5 mm long, obtuse to rounded at base. Style branches 0.5 mm long. Pappus white, 5 mm long.
• Achenes cylindric, 1–1.2 mm long, puberulous. Pappus white, 4.5–5 mm long, bristles unequal.

分布

• 台灣 : in mountains, 2,300–2,900 m, on sunny slopes, rare.

引證標本

NANTOU: Yunhai to Tienchih, Ho 604; Nengkaoshan, Keleey 223–98(B).

引用文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 1019. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)