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Dinghushan | Family List | Dioscoreaceae | Dioscorea

Dioscorea bulbifera L.


Description from Flora of China

Helmia bulbifera (Linnaeus) Kunth.

Tubers usually solitary, renewed annually, ovoid or pear-shaped, 4--10 cm thick; cork black; roots fibrous. Stem twining to left, glabrous, smooth. Bulblets purplish brown with orbicular spots, globose or ovoid, variable in size, weight to 300 g. Leaves alternate, simple; petiole 2.5--5.5 cm; leaf blade broadly cordate, 8--15(--26) × 2--14(--26) cm, glabrous, margin entire or slightly undulate, apex caudate-acuminate. Male spikes usually clustered in leaf axils or along leafless, axillary shoots, drooping, sometimes branched. Male flowers: solitary, ± contiguous along rachis; bract and bracteole ovate; perianth purple, lobes lanceolate; stamens 6, inserted at base of perianth, filaments nearly as long as anthers. Female spikes often 2 or more together, similar to male ones, 20--30 cm. Female flowers: staminodes 6, ca. 1/4 as long as perianth lobes. Capsule reflexed or drooping, straw-colored, densely purplish dotted, oblong-globose, 1.5--3 cm, glabrous, base and apex rounded; wings 0.25--0.7 cm wide. Seeds inserted near apex of capsule, dark brown; wing pointing toward capsule base, oblong, 1.2--1.6 × ca. 0.5 cm. Fl. Jul--Oct, fr. Aug--Nov.

Dioscorea bulbifera is used medicinally in China, but, unlike in Africa, it is not much used as a food plant.

Mixed forest margins, river banks, valley sides; near sea level to 2300 m. S Anhui, Fujian, S Gansu, Guangdong, Guangxi, Guizhou, Hainan, S Henan, Hubei, Hunan, S Jiangsu, Jiangxi, S Shaanxi, Sichuan, Taiwan, Xizang, Yunnan, Zhejiang [Bhutan, Cambodia, India, Japan, Korea, Myanmar, Thailand, Vietnam; Africa, Oceania].

生活型: 藤本

栽培植物: 野生

特征: 草质缠绕藤本;

花期: 夏秋

生境: 生于山谷林缘或疏林灌丛中

用途: 块茎入药,凉血解毒、治吐血、咯血、蛇伤等;块茎及零余子(即生于叶腋内珠芽)可提取淀粉,供酿酒及食用;但有毒,须作去毒处理方可食

门中名: 种子植物门

亚门中名: 被子植物亚门

纲中名: 单子叶植物纲


Related Objects  

Flora of China  
  • Herbarium Specimen (MBG)
  • Specimen Image
  • Illustration
  • Illustration
    Flora of North America  
  • Distribution Map
  • Map
    Flora of Pakistan  
  • Illustration (M.Y. Saleem)
  • Image/JPEG

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