Bistorta amplexicaulis is accepted species in
the family
Polygonaceae
subfamily:
Polygonoideae,
tribe:
Persicariae,
Genus
Bistorta 
Infraspecific taxa recognized within :
infraspecific taxa
This species is found in Afghanistan, China North-Central, China South-Central, China Southeast, East Himalaya, Nepal, Pakistan, West Himalaya.