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Dinghushan | Family List | Dioscoreaceae | Dioscorea

Dioscorea cirrhosa Lour.


Description from Flora of China

Tubers globose, ovoid, gourd-shaped, oblong, or cylindric; cork dark brown; transverse section light brown or red, drying purplish black. Stem twining to right, branched, green, to 20 m, glabrous, prickly at base. Leaves alternate basally on stem, opposite distally on stem, simple; petiole 2--6 cm; leaf blade adaxially dark green, abaxially whitish, ovate to linear, 5--20 × 0.6--14 cm, leathery or subleathery, glabrous, basal veins 3 or 5, reticulate veins prominent, base rounded, sometimes triangular lobed, margin entire, apex acute or acuminate. Male spikes 2--10 cm, in axillary panicles 2--14 cm or longer; rachis straight. Male flowers: outer perianth lobes ovate or broadly so, ca. 2 mm, inner ones obovate; stamens 6, slightly shorter than perianth lobes. Female spike solitary, to 12 cm. Capsule not reflexed, oblate, 1.8--3.5 cm, base emarginate, attenuate into pedicel ca. 7 mm, apex emarginate; wings 1.2--2.7 cm wide. Seeds inserted near middle of capsule, 1.8--2.4 cm in diam. (ca. 0.6 cm excluding wing), winged all round, Fl. Apr--Jun, fr. Jul--Jan.

The tubers have a very high tannin content and are used to dye and preserve fabrics.

Mixed forests, broad-leaved forests, scrub forests, mountain slopes, valleys, along rivers, roadsides; near sea level to 1500 m. Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hunan, S Jiangxi, S and W Sichuan, Taiwan, SE Xizang, Yunnan, S Zhejiang [Thailand, Vietnam].

生活型: 藤本

栽培植物: 野生

特征: 草质缠绕藤本;

花期: 夏月

生境: 生于林中、灌丛或栽培

用途: 块茎(有毒)含鞣质,可提制栲胶作染料;药用治刀伤出血、疮疡生肌收口

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


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