Dioscorea doryphora

戟葉田薯

Dioscorea doryphora Hance

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

名彙資訊

學名發表文獻

Hance, Annales des Sciences Naturelles; Botanique, sér. 5 5: 244. 1866. (Ann. Sci. Nat. Bot., sér. 5)

台灣首次記錄發表文獻

Henry, A List of Plants from Formosa 96. 1896. (List Pl. Formos.)

異名

Dioscorea swinhoei Rolfe

Rolfe, Journal of botany, British and foreign 20: 359. 1882. (J. Bot.)
Dioscorea opposita auct. non Thunb.

Ting et al., Flora Reipublicae Popularis Sinicae 16(1): 103. 1985. pro parte. (Fl. Reip. Pop. Sin.)

各語言俗名

中

恆春薯蕷. 恆春山藥.
日

たかさごどころ.

參考文獻

Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan)

特徵描述

生活型

vine

形態特徵

Stems terete, slender, dextrorse, 1-1.5 mm thick.
Leaves alternate, glabrous; blades hastate-triangular, apex acute, deeply auriculate, 2-6.5 cm long, 2-5 cm wide; nerves 7, trilobed, terminal lobe linearoblong, acuminate, two lateral lobes 0.5-1.5 cm wide, rounded, slightly reflexed, margins entire or undulate, older leaves larger and dark green, younger ones smaller, pale green; petioles 1.5-3 cm long, pale green, 4-angled, dilated at both ends.
Staminate inflorescence in 1-3 axillary spikes, 4-7 cm long, rachis sulcate; flowers 10-25, crowded; perianth segments 6, oblanceolate, 1.5 mm long, 0.8 mm wide.
Capsules many, 0.8-1 cm long, 1.3-1.7 cm wide, stalk not retrovert.

分布

世界 : Mainland China and the Ryukyus.

引證標本

TAINAN: Nankwasyo, Suzuki 5906. KAOHSIUNG: Soma A42; Shitung, Tang 1673. PINGTUNG: Fongkang, Huang et al. 17138, 17139; Chialuosue, Ohashi et al. 14871; Kaoshu, Cheng 277; Kenting, Huang et al. 13765; Laiyi, Huang et al. 16080.