生活型

herb

形態特徵

• Perennials; stems (30-) 60–180 cm tall, erect, paniculately branched apically.
• Lower cauline leaves thin, long petiolate, 12–23×5–10 cm, irregularly lyrate-pinnatisect to ovate-triangular, margins irregularly incised-lobed, distinctly mucro-nulate, upper surface crisp puberulous, loser surface glabrous; upper cauline leaves few, oblong to lanceolate, sessile, margins incised to mucronulate.
• Inflorescence paniculate, with minute lanceolate bracts, bracts 2–3 mm long; peduncle 8–24 mm long, few bracteolate, glabrous. Heads nodding in bud. Involucre cylindric, 8–9×2.5 mm, bracts glabrous, purple, outer ones much shorter, 2- or 3-seriate, ovate-oblong to oblong-lanceolate, 1–4 mm long, inner bracts 8, in 1 series, narrowly oblong. Florets 7–9; purple, 9–10×1–1.3 mm.
• Achenes linear-fusiform, 3.5–4×*0.8 mm, black, 12-ribbed, beak 0.5 mm long. Pappus white, 7 mm long.
• Chromosome number, 2n = 18 (Peng & Hsu, 1978).

分布

• 台灣 : semishaded habitats from low to mid elevations.
• 世界 : Korea, Japan, Vietnam and China.

引證標本

TAIPE: Shihting, Peng 6774. ILAN: Tahsi, Liao 325; Tsueifeng Lake to Tayuanshan, Peng 10339. TAOYUAN: Paling to Lalashan, Peng 11028. HSINCHU: Wufeng, Peng 9381; Yuanyanghu, Chen 163. MIAOLI: Shihtan, Peng 15055. TAICHUNG: Wushihkeng, Yang 6790; Wuling Farm, Peng 8011. NANTOU: Meifeng, Peng 1080; Huishun Forest Area, Peng 14027. PINGTUNG: Wutoushan, Wang 1023. HUALIEN: Huangma to Walami, Liao 1572; Tatung to Chingshuishan, Ho 1234.

參考文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 1022. 1998.  (Fl. Taiwan 2nd edit.)