生活型

twiner

形態特徵

• Tubers depressed spheroidal, large; stems sinistrorse, whitish green to golden brown, ridged.
• Leaves alternate, ovate, rounded or sometimes triangular, 6-27 cm long, 5-27 cm wide, glabrous, apex acuminate, base broadly cordate, margin entire; nerves 7-9; petioles glabrous, dilate, auriculate bulbils in axils of leaves, depressed spheroidal, ca. 2.5 cm in diam.
• Staminate spikes axillary, 1-3, fasciculate, sometimes loosely paniculate, 5-13 cm long, peduncle 1-2.5 cm long, flowers greenish white or purple, numerous and crowded, sessile, each with two bracteole at base, bracteoles ovate, apex acuminate; perianth segments rather thick, linear or lanceolate. Pistillate inflorescences fascicles with 1-5 spikes, rarely panicles, 3-20 cm long; pistilate flowers with two bracteole; perianth segments 6, linear.
• Capsules oblong, 1.5-2.5 cm long, 1-1.5 cm wide, usually dotted with golden brown spots; stigma 6-lobed, persistent; seeds winged.

分布

• 台灣 : widely distributed below 1,000 m.
• 世界 : Mainland China, Hainan and Japan, Korea, Australia, Africa and tropical America.

引證標本

TAIPEI: Kuaninshan, Wu 2185; Shihting, Kuoh 2107, Sasaki s. n. 1922; NTU campus, Hsiao 113. ILAN: Chiauchi, Huang & Huang 13117. HSINCHU: Simizu 56. CHANGHUAH: Tienway, Hsiao 11. KAOHSIUNG: Chishan, Yamamoto & Mori 772; Kangshan, Shimada 5993. PINTUNG: Kenting, Huang et al. 13765; Nanjenshan, Kao 9096; Botansya, Matuda 531. TAITUNG: Lanyu, Sasaki s. n. 1912, 1933.

參考文獻

• HUANG, Tseng-Chieng and HSIAO, Jin-Long. 2000. Flora of Taiwan, second edition 5: 89. (Fl. Taiwan 2nd edit.)