Dioscorea benthamii

大青薯

Dioscorea benthamii Prain & Burkill

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

Prain & Burkill, Journal of the Asiatic society of Bengal. 4: 448. 1908. (J. Asiat. Soc. Beng.)

台灣首次記錄發表文獻

Hayata, Icones Plantarum Formosanarum 10: 36. 1921. (Icon. Pl. Formos.)

異名

Dioscorea oppositifolia auct. non L.

Henry, A List of Plants from Formosa 95. 1896. (List Pl. Formos.)
Dioscorea glabra auct. non Roxb.

Hayata, General Index to the Flora of Formosa 84. 1917. (Gen. Ind. Fl. Formos.)
Dioscorea tarokoensis Hayata

Hayata, Icones Plantarum Formosanarum 10: 44. 1921. (Icon. Pl. Formos.)

各語言俗名

中

山藥薯. 田菁.
日

なめらいも. たいせいいも.
台

Soan iòk tsû. Chhân chhin.

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

Glabrous right-twining vine; stems terete, brown.
Leaves opposite, chartaceous, lanceolate or elliptic, 5-7 cm long, 1.5-3.5 cm wide, apex acute, base obtuse or rounded; nerves 3-5, veinlets obscure above and prominent beneath; petioles 2-3.5 cm long; slender.
Staminate inflorescences of one to many fascicled spikes, rarely paniculate, axillary, spikes 3-5 cm long, ca. 20-flowered; staminate flowers 1 mm long, 1,5 mm wide, sessile, 2 bracts at base; bract triangular, apex acuminate, 2 mm long; rachis flat, sulcate; perianth segments 6; fertile stamens 6; pistilate spikes 1-2, 2-12 cm long, each bearing 2-10 subsessile flowers.
Capsules reniform, 3-winged, 1.5-2 cm long, 1.5-4 cm wide, shortly stipulate; seeds 4 mm long, with the wing 3-7 mm wide.

分布

世界 : Distributed in Hongkong and Taiwan.

引證標本

TAIPEI: Yangmingshan, Huang 9736; Nankoshan, Suzuki s. n. 1922; Sansiah, Simada SH1039. TAICHUNG: Pasienshan, Suzuki s. n. 1929. NANTOU: Sun-Moon Lake, Sasaki s. n. 1929; Wushe, Sasaki s. n. 1929. PINTUNG: Machia, Huang et al. 7353; Nanjenshan, Kao 7341; Raysia, Matuda 523; Bodansya, Matuda 526. HUALIEN: Agriculture Farm, Huang et al. 17348, 17532.