生活型

climber

形態特徵

• Stems suberect to scandent, prickly, sometimes smooth, branching; branches prickly or smoothish.
• Leaf blade elliptic to ovate-oblong or ovate ellipsoid, 2.5-9 cm long, 1-4 cm wide, base rounded, apex contracted, short acute, thinly coriaceous, opaque to slightly shiny, lower surface pale, somewhate glaucous, costas (3-)5, prominently elevated, lateral veinlets oblique to ascending, densely reticulate, distinctly elevated on upper and lower surfaces; petiole slightly curved, 5-7 mm long, narrowly winged, cirrhose above sheath; tendrils nearly as long as blade or much reduced.
• Umbel solitary in nonprophyllate axils, peduncle 2.5-4 cm long. Pistillate inflorescence 13-24-flowered, staminate ones 9-28-flowered. Staminate flowers: perianth segments erect to erect-patent, slightly incurved, glaucous, green, reddish at base, outer ones broadly ellipsoid, somewhat obtuse, 4.5-5(-5.2) mm long, 1.8-2 mm broad, inner ones nearly as long as outer, oblanceolate, obtuse, ca. 0.6 mm wide; stamens 6, anther 0.8 mm long, oblong-ellipsoid, yellow, filaments 2-2.2 mm long. Pistillate flowers: perianth segments patent, slightly shorter than pistil, outer ones ovate, 3.5-4 mm long, 1.8 mm wide, inereous-green with reddish center, rounded to acute, inner ones oblanceolate to oblanceolate-oblong, obtuse, slightly shorter than outer ones, thin membranaceous; pistil ovoid-globular, stigmas 3; staminodia 3, needle-like.
• Berries globose, 6-8 mm in diam., dark blue, powdery; seeds 1-3, broadly ellipsoid, 4 mm long, castaneous, opaque.

物候

flowering in spring.

分布

• 台灣 : occasional in forests, 1,200-2,700 m.
• 世界 : Mainland China, frequent in Yangtze River valley. Chekiang to Hopei, also in Kweichow.

引證標本

TAOYUAN: Paling, Jeng 819; Taman, Wang 1401; Taoshan, Ying 3678. HSINCHU: Kuanwu, Hsu & Kuoh 13986. MIAOLI: Shukuang, Wang 1177; Szumahsien Forest Road Wang 1189. TAICHUNG: Pahsienshan, Wang 1415; Takeng, Wang 1182, 1233, 1196; Wuling, Wang 4334. NANTOU: Hoshe, Kuo 246; Lienhuachih, Huang LH2; Lushan, Wang 1371; Tungpu, Wang 1356, 357. CHIAYI: Tefuyeh, Wang 238. TAITUNG: Chinshuiying, Kao 2848; Hsinwuchiao, Yang 30366. HUALIEN: Chingshuishan Shimizu & Kao 11898; Pilu, Wang 30412-7; Tienhsiang, Peng 9291.

參考文獻

• KOYAMA, Tetsuo, WANG, Kuang-Yuh, LU, Fu-Yuan, and OU, Chern-Hsiung, Flora of Taiwan, second edition 5: 112. 2000.  (Fl. Taiwan 2nd edit.)