The English name of yam is Chinese yam. How to eat it: The tubers can be eaten as vegetables.

Yam is distributed in North Korea, Japan and China; in China it is distributed in Henan, Anhui, Jiangsu, Zhejiang, Jiangxi, Fujian, Taiwan, Hubei, Hunan, Guangdong, Guizhou, northern Yunnan, Sichuan, eastern Gansu and Southern Shaanxi and other places. Grows in shrubs or weeds on hillsides, valleys, streams, roadsides.

Tubers are commonly used in traditional Chinese medicine "Huaiyam". Tubers are rich in starch and can be eaten by vegetables. They can be used as medicine to clear away heat and detoxify, replenish spleen and stomach deficiency, and treat qi deficiency, indigestion, spermatorrhea, enuresis, and unnamed swelling and toxins. .

Extended information

Morphological characteristics: twining herbaceous vines. The tuber is cylindrical, grows vertically, can reach more than 1 meter in length, and is white when dry in cross section. The stem is usually purple-red, right-handed, and hairless. Single leaves, alternate in the lower part of the stem, opposite above the middle, rarely in whorls of 3 leaves.

The leaves are highly variable, from ovate triangular to broadly ovate or halberd-shaped, 3-9 (-16) cm long, 2-7 (-14) cm wide, apex acuminate, and base deeply heart-shaped. , broadly heart-shaped or nearly truncate, with edges often 3-lobed to 3-lobed, the middle lobe ovate-elliptical to lanceolate, the side lobes ear-shaped, round, nearly square to oblong; the leaves are generally wide when seedlings Oval or oval, with a deeply heart-shaped base. There are often bulbils in the leaf axils. Dioecious.

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