生活型

herb

形態特徵

• Stems 35–100 cm tall with tuberous base, much branched, branches ascending.
• Lower and radical leaves smaller, spatulate; cauline leaves thick, oblong, 9–26×5–11.5 cm, apex obtuse to acute, base narrowed into short pseudostipulate petiole, amplexicaul or sometimes without pseudostipules, margins incise-dentate or often lyrate-pinnatifid or parted, terminal lobe much longer than laterals, segments incised-dentate; upper cauline leaves gradually smaller, ovate-lanceolate to linear, acuminate.
• Heads numerous or few, in loose corymbs; involucre tubular, 11–12×10–12 mm, subtended by many linear leaves, bracts lanceolate, acuminate. Corolla 10–17 mm long.
• Achenes cylindric, 4.5×0.8 mm, 10 ribbed, glabrous. Pappus white, 7–10 mm long.
• Chromosome number, 2n = 20 (Peng & Hsu, 1978). <li><i>Gynura japonica</i> is not a native of Japan as suggested by the specific epithet. The type specimen is from a plant cultivated in Japan.</li>

分布

• 台灣 : local nearly throughout the island, at low and more often mid elevations, usually along road cuts in forests.
• 世界 : Nepal, Thailand and China.

引證標本

TAIPEI: Tatunshan, Shen 305; Peichatienshan, Peng 10114. TAOYUAN: Lalashan, Peng 14657. MIAOLI: Kuanwu, Peng 8429. TAICHUNG: Lishan, Ho 283; Tashsuehshan Forest Track, Yang 6369. NANTOU: Chitou, Leu 375; Chingjing Farm, Peng 6109. CHIAYI: Tienyunshan, Peng 8846. KAOHSIUNG: Tengchih, Peng 14786. PINGTUNG: Wutai, Lin 357; Wuweishan, Yang 4520. HUALIEN: Tzuen, Peng 5978.

引用文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 987. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)