生活型

vine

形態特徵

• Scandent perennial herbaceous vines. Stem green, turning black when dry, sulcate, pubescent.
• Leaves bipinnately compound, chartaceous; petioles tendril-like, 4.4-5.8 cm long; stipules absent. Leaflets 15, 3.7-6.2 cm long, 8-18 mm wide, narrowly ovate or ovate-lanceolate; apex acuminate; base obtuse or cuneate; unlobed or sometimes 3 lobed; margin entire; sparsely pubescent on both surfaces or sometimes nearly glabrous on adaxial surface; main veins 3, nerves sunken on adaxial side, elevated on abaxial side; petiolulate.
• Inflorescences cymes, axillary or terminal; pedicels pubescent, trichotomously branched; bracts and bracteoles elliptic or oblong-lanceolate, sparsely pubescent on adaxial side, pubescent on abaxial side. Flowers 1.3-2.5 cm in diam. Sepals 4, white, spreading, 10-15 mm long, 4-6 mm wide, elliptic or oblong; apex acute; base cuneate; sparsely velutinous or velutinous inside and densely velutinous outside. Stamens numerous, 4-8 mm long, glabrous, centripetal; anthers narrowly elliptic, dehiscence lateral, longitudinal; connective shorter than pollen sacs; filaments linear, flat.
• Carpels numerous, white sericeous. Fruits 3.0-4.6 cm long; achenes 2.8-4.2 mm long, narrowly orbicular or ovate, compressed laterally, brown, yellow velutinous; style with brown or yellowish-brown hairs.

分布

• 台灣 : Open land and forest margins mainly in the southern part of the Island, but also in central and northern Taiwan below 1,500 m.

引證標本

TAIPEI: Chutzuhu, Sasaki s. n. 1931. MIAOLI: Erpensung to Hsuechien, Huang & Huang 15385. KAOHSIUNG: Chihshan, Tengchi, Huang et al. 14436. PINGTUNG: Nanjenshan, Yang 6119 (Holotype, TAI; isotypes, HAST, K, PE, TNM, TNU); Kuraru, Matuda s. n. 1915. TAITUNG: Chipen, Liu et al. 866; Malousishan, Wang et al. 8845. HUALIEN: Tafen, Yang 330.

參考文獻

• YANG, T. Y. ALECK and HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 2: 536. 1996.  (Fl. Taiwan 2nd edit.)