生活型

vine

形態特徵

• Scandent perennial herbaceous vines. Stem green when fresh, turning black when dry, sulcate, sparsely pubescent or glabrous.
• Leaves pinnately compound, chartaceous; petioles tendril-like, 3.0-5.0 cm long; stipules absent. Leaflets 5-7-15, 2.0-7.8 cm long, 1.0-3.8 cm wide, ovate, narrowly ovate or ovate-lanceolate; apex acuminate; base obtuse, cuneate or cordate; rarely lobed; margin entire; glabrous on both surfaces or sparsely pubescent on adaxial surface; main veins 3 to 5, nerves flat or sunken on adaxial side, elevated on abaxial side; petiolulate.
• Inflorescence cymes, axillary or terminal; Pedicels pubescent, trichotomously branched; bracts and bracteoles elliptic or oblong-lanceolate, sparsely pubescent or glabrous on adaxial side; densely pubescent on abaxial side. Flowers 10-20 mm in diam., white, spreading. Sepals 4, 7-12 mm long, 2-4 mm wide, elliptic to oblong; apex obtuse-mucronulate; base cuneate; glabrous or nearly so inside, densely velutinous outside. Stamens numerous, 4-8 mm long, glabrous, centripetal; anthers narrowly elliptic or linear, dehiscence lateral, longitudinal; connective shortly excurrent beyond pollen sacs, 0.10-0.15 mm long; filaments linear flat.
• Carpels numerous, white sericeous. Fruits 2.5-4.0 cm long; achenes 4-6 mm long, orbicular or broadly ovate, compressed laterally, dark brown, pale yellow velutinous; style with brown or pale yellow hairs bearded.

分布

• 台灣 : in open land and forest margins from 500 to 1,800 m throughout the Island.
• 世界 : Mainland China, Hong Kong and northern Vietnam.

引證標本

MIAOLI: Tsiaochiao, Simada 3153. TAICHUNG: Neipu, Hsu 4713. NANTOU: Hosheh to Alishan, Tamura et al. 22279. CHIAYI: Alishan, Fenchihu, Faurie s. n. 1914. KAOHSIUNG: Tasheh, Kuangyingshan, Yang et al. 6191. PINGTUNG: Hengchun, Matuda s. n. 1917. TAITUNG: Hongyie-tsun, Yang et al. 5929. HUALIEN: Tienhsian, Kuo et al. 7001.

引用文獻

• YANG, T. Y. ALECK and HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 2: 518. 1996.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)