生活型

vine

形態特徵

• Scandent perennial deciduous woody vines.
• Leaves ternately compound, sometimes pinnate, chartaceous, opposite; petioles tendril-like, 3.6-6.1 cm long; stipules absent. Leaflets 3 to 5, 2.2-7.2 cm long, 1.0-4.7 cm wide, ovate or ovate-lanceolate; apex acuminate; base cuneate or obtuse; 1-3-lobed; margin irregularly serrate; pubescent on both surfaces or sparsely velutinous on adaxial surface; main veins 3, nerves flat or sunken on adaxial side, elevated on abaxial side; petiolulate.
• Inflorescence fasciculate, axillary; pedicels densely velutinous, trichotomously branched. Flowers 3-7.2 cm diam. Sepals 4, white, spreading, 2.0-4.0 cm long, 1.0-2.5 cm wide, elliptic or obovate; apex obtuse-mucronulate; base cuneate; glabrous inside, densely velutinous outside. Stamens numerous, 5-10 mm long, glabrous, centripetal; anthers narrowly elliptic or linear, dehiscence lateral, longitudinal; connective excurrent beyond pollen sacs, 0.13-0.17 mm long; filaments linear and flat.
• Carpels numerous, ovary glabrous, style white sericeous. Fruits 3.8-5.5 cm long; achenes 3-5 mm long, round or elliptic, convex laterally, brown to dark brown, glabrous; style hairs pale yellow or yellow.

分布

• 台灣 : alpine grasslands or with shrubs in the central mountains, Hsueshan and Yushan above 2,500 m.
• 世界 : From the Himalayan area, India and mainland China to Taiwan.

引證標本

ILAN: Shenmachenshan, Huang 7773. HSINCHU: Tapachienshan, Yang 2354. TAICHUNG: Hsiaohsuei-shan, Yang 424. NANTOU: Montibus, Mori s. n. 1912 (TI!). CHIAYI: Tataka-anbu, Hsu 5382. HUALIEN: Tayuling, Lin s. n. 1983.

引用文獻

• YANG, T. Y. ALECK and HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 2: 532. 1996.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)