生活型

vine

形態特徵

• Scandent perennial woody vines. Stem sulcate, densely velutinous.
• Leaves chartaceous; petioles tendril-like, 3.5-6.5 cm long; stipules 4, palmate, coarsely serrate, chartaceous. Leaflets 9-15, 3.6-7.5 cm long, 1.2-4.0 cm wide, elliptic or elliptic-lanceolate; apex acute, rarely acuminate; base cordate, obtuse or cuneate; unlobed or sometimes 3-5-lobed; margin entire; glabrous or nearly so on adaxial surface, sparsely velutinous on abaxial surface; main veins 3 to 5, nerves flat or sunken on adaxial surface and elevated on abaxial surface; petiolulate, tendril-like, articulate near leaflet base.
• Inflorescences a panicle of cymes or cymes, axillary; Pedicels velutinous, trichotomously branched; bracts and bracteoles leaf-like, sulcate or oblong-lanceolate, chartaceous, glabrous or sparsely velutinous on adaxial side, densely velutinous on abaxial side. Flowers 10-15 mm diam., yellowish-green or pale yellow, spreading. Sepals 4, 7-10 mm long, 4-5 mm wide, oblong; apex acute-mucronulate; base cuneate or obtuse; glabrous or nearly so inside, densely villose outside. Stamens numerous, 3-6 mm long, glabrous, centripetal, inner ones shorter; anthers narrowly elliptic or linear, dehiscence lateral, longitudinal; connective shorter than or equal to pollen sacs; filaments linear and flat.
• Carpels numerous, golden sericeous. Fruits 1.9-3.7 cm long; achenes 2-4 mm long, ovate-elliptic or elliptic, convex on both sides, dark brown or nearly black, yellow velutinous hairs; style with pale yellow hairs bearded.

分布

• 台灣 : open land and near forest margins in the central mountains, including Yushan and Alishan between 1,200 and 2,600 m.

引證標本

ILAN: Nanshan to Chungyangchienshan, Tamura & Koyama 23614. TAICHUNG: Lishan, Yang 4226. NANTOU: E-W Cross Island Highway, Yang 2623 (Holotype, TAI; isotypes: HAST!, K!, PE!, TUNG!). CHIAYI: Alishan, Yang 2549. KAOHSIUNG: S. Cross Island Highway, Likuan Station, Yang 3126. HUALIEN: Tafeng, Yang 331.

參考文獻

• YANG, T. Y. ALECK and HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 2: 521. 1996.  (Fl. Taiwan 2nd edit.)