生活型

vine

形態特徵

• Stout climbing vines. Stems terete or obtusely angled, becoming woody, 4-8 m long, 10-12 mm thick; internodes 8-25 cm long, smooth or thorny; branches 40-60 cm long, straightish, internodes 3-8 cm long, 1-3 mm thick, smooth or sparsely prickly.
• Leaf blade ovate to elliptic or ovate-elliptic, rarely broadly elliptic, 4-10(-14) cm long, 2.5-8(-12) cm wide, base subabruptly contracted or rounded, or subacute, rarely shallowly emarginate, apex gradually or +/- abruptly trapering from below middle, acute, coriaceous, more or less glaucous; costas 5 or 7, including a weak marginal pair, median 3 connate to 5-13 mm above base, or rarely all separate near base, thick, prominently raised on lower surface, lateral veinlets patent, straight or incurved, reticulations, not elongated, prominent on lower surface; petiole 1.5-4(-6) cm long, 1.5-2 mm thick, 3-angled, patent, sheathing for 0.8-4 cm long; wings broadly ovate, 1.5-2.5 cm long, 0.7-2 cm wide, gradually attenuate to subacute apex, base cordate deeply clasping; tendrils 7-20 cm long.
• Inflorescences in axils on lower and middle part of branches, mostly 1-3-umbellate; common axis 1-3 cm long; prophyll ovate, acute, 0.8-1 cm long; peduncle 2-5 cm long, rather rigid, Umbels of both sexes 3-5 cm across, densely 20- to 70-flowered; rays 7-15 mm long. Staminate tepals 5.5-6.2 mm long, strongly recurved; outer tepals oblong, obtuse, 1-1.2 mm wide, inner tepals linear 0.3 mm wide; stamens 6, filaments 6 mm long; anthers ellipsoid, oblong, white, 1.2 mm long. Pistillate tepals patent at anthesis, 4-5 mm long, lanceolate-ovate, subacute, outer ones 1.2 mm wide, tapering to both ends; stigmas erect 1-1.25 mm long; staminodia 3, needle-like, 1.8-2.1 mm long.
• Berries 1-1.2 cm in diam., yellowish then red; seeds 1 or 2, obovate-orbicular, thick lenticular, ca. 5 mm long and wide, deep red.

物候

flowering in spring.

分布

• 台灣 : occasional in forests, sea level to 1,500m.
• 世界 : India through Myanmar, Thailand and Indochina eastward to southern China.

引證標本

CHIAYI: Fenchihu, Lin et al. 131. TAINAN: Kuantzulin, Wang 20021; Tseng wenshuiku, Huang & Yang 4406. KAOHSIUNG: Chihpen, T. Koyama 13076; Shanping, Chang 7016; Tachin, Wang 1245. PINGTUNG: Chialeshui, Huang & Huang 13011; Laofoushan, Chen 139, 140; Nanjenshan, Wang S7795, S7796, S7797, S7798; Neiwen, Kudo & Mori 30027; Sheting, Chuang 1144. TAITUNG: Peinan, Wang et al. 1589; Shuangliu, Wang & Chan 1239; Tawu, Wang & Tung 1333.

參考文獻

• KOYAMA, Tetsuo, WANG, Kuang-Yuh, LU, Fu-Yuan, and OU, Chern-Hsiung. 2000. Flora of Taiwan, second edition 5: 126. (Fl. Taiwan 2nd edit.)