生活型

climber

形態特徵

• Climbing vines. Stems woody, 1-6 m long, 3-8(-10) mm thick, branches 20- 60 cm long, zigzag to straightish; internodes 2-7 cm long. 1.5-3 mm thick. weakly angular, smooth or sparsely thorny.
• Leaf blades ovate-orbicular to broadly elliptic, often ovate-elliptic or narrowly ellipsoid, rarely somewhat depressed-orbicular, 2-5(-8) cm long, 2-4(-6) cm wide, base rounded to suddenly contracted, apex rounded to shallowly emarginate, usually mucronate, sometimes rather suddenly attenuate to subacute, coriaceous, glaucous-green or white-powdery on lower surface; costas 5 or 7 including a slender marginal pair, all separate to base, slender, distinct on both surfaces, lateral veinlets oblique, reticulation distinct; petiole 10-15 mm long, 1-1.2 mm thick, trigonous with subacute abaxial angle, sheathing for 6-10 mm long; wings oblong or lanceolate-oblong, membranaceous, obtuse, 1-2 mm wide; tendrils 0-15 cm long.
• Inflorescence a single umbel, in non-prophyllate axils of first year branches; peduncle 1-4 cm long. Umbels of both sexes 15-20 mm across at anthesis, 10-20-flowered. Staminate perianth campanulate at anthesis, yellowish green, 4.5-5.5 mm long; outer tepals ovate-ellipsoid, apex recurved, subobtuse, 1.8-2.2 mm wide; inner tepals lanceolate-oblong, apex subobtuse, 1-1.2 mm wide; stamens not exserted; anthers ellipsoid, 0.5-0.75 mm long, filaments ca. 3 mm long. Pistillate perianth 3-4 mm long; tepals patent, lanceolate to elliptic, subobtuse, outer ones 1.5-1.8 mm wide, inner ones 1-1.2 mm wide; ovary ovoid, 2 mm long; stigmas spreading, 0.8 mm long; staminodia 3, subulate-linear, 1-1.3 mm long.
• Berries globose, 8-10 mm across, red. Seed 1-3(-5), 3-4 mm long, obovate-orbicular, red-purple.

物候

flowering in spring.

分布

• 台灣 : occasional in forests and on grassy hillsides, sea level to 2,700 m.
• 世界 : Widely distributed from Japan through the Ryukyus and temperate China southward to northern Myanmar, northern Thailand and Indochina, and the Philippines.

引證標本

TAIPEI: Chihsingshan, Chang 2310; Juifang, Shyu & Chen s.n.; Peichatienshan, Peng 10120. ILAN: Mutan, Chang 4827; Tayuanshan, Kao 3221. TAOYUAN: Linkou, Chen 1121; Tayuan, Huang et al. 8630. HSINCHU: Chienshih, Wang 1361; Lienhuachih, Wang 626. MIAOLI: Szumahsien Forest Road Wang 1185. TAICHUNG: Chiayang, Peng 12471; Takeng, Wang & Chung 1194; Toukeshan, Tateishi et al. 21295. NANTOU: Hoshe, Kuo 255; Lienhuachih, Ou (Ari. 25.1970); Meifen, Wang 1358. CHIAYI: Alishan, Chen 10640. KAOHSIUNG: Chuyunshan, Wang 1216, 1368; Tengchih, Ohashi et al. 12936. PINGTUNG: Ali, Yang 10298; Chiupeng, Chang 17882; Hsiaokueihu, Chiu 265. TAITUNG: Changpin, Chang 12165; Peinan, Yamamoto & Mori (29912); HUALIEN: Lushuiholiu, Wang 1161; Pilu, Wang (S8514).

參考文獻

• KOYAMA, Tetsuo, WANG, Kuang-Yuh, LU, Fu-Yuan, and OU, Chern-Hsiung, Flora of Taiwan, second edition 5: 106. 2000.  (Fl. Taiwan 2nd edit.)