生活型

herb

形態特徵

• Perennial herbs. Stems erect, 40–100 cm long, grayish pubescent, branching apically.
• Lower cauline leaves ovate-rhomboid or ovate, 3.5–6.5(–10)×1.5–3 cm, apex acute or obtuse, base cuneate, margins mucronate or undulate-serrulate, upper surface puberulent, lower surface soft grayish pubescent, especially on nerves, petiole 10–25 mm long, often winged; upper leaves gradually smaller, narrower, broadly lanceolate to linear.
• Inflorescence corymbose-paniculate; heads many, 7–8 mm long, rose-purple, short pedunculate; involucres campanulate, 4–5 mm long, pubescent, glandular dotted; bracts 4-seriate, outer linear, 1.5–2 mm long, acuminate, median linear, inner linear-lanceolate, awn-tipped; florets ca. 20; corolla purple, 5–6 mm long.
• Achenes terete, ca. 1.5–2×0.7 mm long, densely short hispid, glandular dotted. Pappus-bristles whitish, persistent, 4–5 mm long, 2-seriate.

分布

• 台灣 : common along roadsides and in grassy fields throughout the island, often becoming a weed in gardens.
• 世界 : Tropical Asia.

引證標本

TAIPEI: Pinghsi, Peng 15183. ILAN: Wushihpi, Peng 10819. TAOYUAN: Fuhsing, Peng 10312. HSINCHU: Lienhuassu, Yang 4960. MIAOLI: Taian, Lin 553. TAICHUNG: Takeng, Chiu 3267. NANTOU: Tungpu, Peng 6483. CHIAYI: Tienyunshan, Peng 8890; Pinlin, Kao 10337. TAINAN: Peimen, Peng 10528. KAOHSIUNG: Maolin, Peng 11265; Tengchih, Chen 592. PENGHU: Chimeiyu Is., Chen 739. PINGTUNG: Nanjenshan, Peng 7810. TAITUNG: Lanyu Is., Peng 6657. HUALIEN: Taroko, Peng 9304; Chohsi, Peng 11697.

參考文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 1086. 1998.  (Fl. Taiwan 2nd edit.)