Scientific name: Polygonum multiflorum Thunb.

English name: Dockleaf Polygonum cuspidatum

Family name: Polygonaceae Polygonaceae

Morphological characteristics: annual herb, 30-200 cm high. Stem erect, upper branch, pink, enlarged nodes. The leaves are wide and needle-shaped, with large size variation, tapering or acute tip, green surface, often with dark brown crescent spots, and coarse hairs embedded on both sides along the main vein and leaf margin; Stipules sheath tubular, glabrous, light brown. Inflorescence a panicle consisting of several spikes; Bracts membranous, margins sparsely short eyelashes, perianth pink or white, 4-parted; Stamens 6; Style 2-lobed, curved outward. Achenes are oval, flat, slightly concave on both sides, dark brown and shiny. The flowering period is June-August, and the fruiting period is July-65438+1October.

Produced in Xinyi, Nanjing, Baoying, Zhenjiang and other places, born in roadside wetlands and ditches; Distributed in Heilongjiang, Liaoning, Hebei, Shanxi, Shandong, Anhui, Hubei and Guangdong.

Fruit is a diuretic, mainly used for edema and sore poison; Mixing fresh stems and leaves with salt and mashing them into juice can effectively treat cholera and heatstroke. External use can be used to treat sores and snake venom; Whole grass can be used as soil pesticide; Seeds contain starch.