生活型

herb

形態特徵

• Annual herb, erect, 70–90 cm tall. Stems pale, striated, densely white-villous particularly in younger parts, somewhat woody at base, 0.4–0.7 cm in diam., branched above.
• Lower leaves larger, chartaceous, obovate-oblong to spatulate, 16–18×4–7 cm, puberulous on upper surface, appressed white woolly on lower surface, apex acute, base attenuate, margins regularly and remotely mucronulate, veins 10–12 pairs.
• Heads 8–10 mm long, 4–5 mm across, pedunculate, in lax panicles. Involucre globose-campanulate, bracts in 3 or 4 series; outer ones shorter, linear-lanceolate, 2–3×0.5–0.6 mm, outer surface with numerous sessile glands and multicellular hairs; inner ones linear, 6–7×0.5 mm, margins ciliate. Receptacle slightly convex, 3–4 mm across, alveolate, glabrous. Central florets yellowish, tubular, 6–7 mm long, with 5 broadly triangular lobes, lobes with sessile glands and sparse multicellular hairs. Outer florets filiform, 5–6 mm long, limbs 2 or 3 lobed.
• Achenes oblong, 1 mm long, 0.4 mm across, ribbed, brownish, glandular hairy. Pappus brownish, 4–5 mm long.

分布

• 台灣 : semishaded broadleaf forest and plantation floors and at forest edges, mainly in the north, rare.
• 世界 : Southeastern China.

引證標本

TAIPEI: Sanhsia, Peng 8616; Pinglin, Kao 1407. NANTOU: Kuantaohsi, Peng 2202. TAICHUNG: Tungmaoshan, Leu s. n. 1985. CHIAYI: Tapu, Yen 7396.

引用文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 878. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)