Kingdom Plantae Genus Persicaria Rank Species | Family Polygonaceae Scientific name Bistorta amplexicaulis Order Caryophyllales | |
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Similar Knotweeds, Bistorta, Persicaria affinis, Bistort, Knotweed |
Persicaria amplexicaulis
Persicaria amplexicaulis, the red bistort or mountain fleece, is a species of flowering plant in the buckwheat family, 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.
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The specific epithet amplexicaulis means "clasping the stem", and refers to the leaves' habit of growing around the stem.

Numerous cultivars have been developed for garden use, including 'Firetail'.
Shade loving plant firetail persicaria amplexicaulis


References
Persicaria amplexicaulis Wikipedia(Text) CC BY-SA