Bistorta amplexicaulis (synonym Persicaria amplexicaulis), the red bistort[2] or mountain fleece, is a species of flowering plant in the buckwheat family Polygonaceae, native to China, the Himalayas, and Pakistan.

It is a damp-loving herbaceous perennial growing to 1.2 m (4 ft) tall and wide, with heart-shaped pointed leaves, downy beneath, and narrow spikes of rose-red or white flowers in summer.

[3][4] Numerous cultivars have been developed for garden use, including 'Firetail'.

[5] The Latin specific epithet amplexicaulis means "clasping or embracing the stem", and refers to the leaves' habit of growing around the stem.

This Polygonaceae article is a stub.