Alias Chidili, Huotanxing, Huotanteng, Baifanteng, Xinfanteng and Huotancai, Polygonaceae plant Huotanmu is a perennial herb, and the whole herb can be used as medicine. The stem is nearly erect or curved, with a height of1m. The stem is cylindrical, slightly ribbed, smooth or sparse or glandular hairy, lying or attached, with solid bottom and many branches. Those who crawl on the ground take root at the nodes, and the shoots are purple. China, Japanese, Philippine, Malaysian, Indian.

It is a perennial herb with nearly erect or curved stems, up to 1m, cylindrical stems, slightly ribbed, smooth or sparse hairs or glandular hairs, lying on the ground or attached, solid lower part, multi-branched, rooting at nodes, and purple shoots. Leaves alternate, oval or oval, 7 ~ 12 cm long and 2.5 ~ 6 cm wide; The top is tapered, the base is truncated, rectangular or nearly heart-shaped, the whole edge or crenulate. The upper surface is bright green or has V-shaped black stripes; The main veins on the lower surface are hairy; With handle. There are often two auricular lobes on both sides of the base; Stipules membranous, sheath-shaped, apex oblique, glabrous. Flowers in autumn, heads, then panicles or corymbose inflorescences, axillary, main axis and branches covered with glandular hairs; Without involucre, bracts membranous, glabrous, usually acute; Small flowers are white, red or purple; Perianth 5-parted; Stamens 8, ovary superior, style 3-lobed; Achenes are triangular at first, spherical at maturity, black and triangular, all surrounded by succulent, transparent, white or blue persistent flowers, and bloom in September.

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