生活型

climber

形態特徵

• Stems 5-7 m long, 10-12 mm thick, terete, climbing, +/- prickly or smooth; branches 15-20 cm long, divergent, more or less zigzag, loosely prickly or smooth, internodes 1.5-3 cm long, 1-1.2 mm thick.
• Leaf blade lanceolate to oblong-ovate, coriaceous, 3-6(-10) cm long, 0.8-2(-4) cm broad, base rounded, apex gradually narrowed, acute to acuminate, costas 3, elevated on the lower surface, lateral veinlets patent to divergent, loosely reticulate; petiole 5-10 mm long, 1-1.3 mm thick, abruptly incurved from above base, slightly compressed, narrowly winged, cirrhose just above sheath; tendrils nearly as long as blade or much reduced.
• Umbel solitary, peduncle slender, somewhat compressed, smooth, 15-35 mm long. Staminate flower: perianth segments pale green, patent, outer ones elliptic, 4 mm long, 1.1 mm wide, acute, inner ones as long as and slightly narrower than outer; stamens 6, 2.5 mm long, anthers milky white, 0.2 mm long, oblong-ellipsoid. Pistillate flower: perianth segments pale green, patent, outer ones ovate-elliptic, 1.8- 2.2 mm long, 0.8-1.1 mm wide, acute, inner ones as long as and slightly narrower than outer; ovary ovoid, stigmas linear, recurved; vestigial stamens 0.
• Berry globose, blueblack, glaucous, 5-7 mm across; seeds 1-3, ovoid-ellipsoid, 4 mm long, castaneous, opaque, somewhat plano-convex.

物候

Flowering in spring.

分布

• 台灣 : occasional in forests in central montane region, 700 ~ 2,800 m.
• 世界 : Central China.

引證標本

TAIPEI: Fushan, Suzuki 16388, Fuzita 297. ILAN: Tayuanshan, Kao 3241; Tsuifenghu, Wang et al. 9394. HSINCHU: Kuanwu, Wang 1362; Tapachienshan Chang 2025; Yuanyanghu, Wang 106. MIAOLI: Hsuehchien, Huang & Huang 15422. TAICHUNG: Meifen, Chang 6553; Tahsuehshan, Chang 4249, 5752; Pahsienshan, Chuang et al. 2749. NANTOU: Howang, Wang 1352; Meifen, Peng 14450; shanlinhsi, Wang (S8000, S8001, S8006, S8007, S8008). CHIAYI: Tatungshan, Wang 230. KAOHSIUNG: Chuyunshan, Wang 1296; Tengchih, Wang 1218; PINGTUNG: Hsiaokueihu, Yang 6988; Peitawushan, Wang & Li 1316; Wutoushan, Yang 5801, 5516. HUALIEN: Hsinkangshan, Shen 656; Chingshuishan Shimizu & Kao 11870.

引用文獻

• KOYAMA, Tetsuo, WANG, Kuang-Yuh, LU, Fu-Yuan, and OU, Chern-Hsiung, Flora of Taiwan, second edition 5: 103. 2000.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)