Polygonum bistorta

Polygonum bistorta, also known as bistort or snake-root, is a species of flowering plant in the family Polygonaceae. It is native to Europe and Asia, and has been introduced to North America.

Description

Polygonum bistorta is a perennial plant that grows to a height of 75 cm. It has a thick, twisted rootstock, hence the name 'bistort', which means 'twice twisted'. The leaves are oblong-ovate or triangular-ovate in shape and the flowers are pink or pale purple, arranged in a dense, terminal spike.

Habitat and Distribution

Bistort is found in a variety of habitats, including meadows, grasslands, and wetlands. It prefers moist, well-drained soils and can tolerate a range of pH levels. In Europe, it is found from Scandinavia in the north to the Mediterranean in the south, and eastwards to western Asia. In North America, it is found in the northeastern United States and eastern Canada.

Uses

Bistort has been used in traditional medicine for its astringent properties. The roots are rich in tannins and can be used to treat diarrhea and dysentery. The leaves can be used to make a poultice for wounds and sores. In addition, bistort is also used as a food source. The young leaves and shoots can be eaten raw or cooked, and the roots can be dried and ground into a flour.

Cultivation

Bistort is a hardy plant that can be easily grown in a garden. It prefers full sun to partial shade and moist, well-drained soil. It can be propagated by seed or by division of the rootstock in spring or autumn.

Conservation Status

While Polygonum bistorta is not currently considered to be at risk, its habitat is being lost due to urban development and changes in land use. Conservation efforts are focused on preserving its habitat and preventing further loss.

See Also

• Polygonaceae
• Traditional medicine
• Conservation biology

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