Bistorta griffithii

Bistorta griffithii is a species of flowering plant in the family Polygonaceae, native to Tibet, East Himalaya, South-Central China and Myanmar.
Taxonomy.
"Bistorta griffithii" was first described in 1886 by Joseph Dalton Hooker as "Polygonum griffithii". It was transferred to the genus "Bistorta" in 1982 by Andrew Grierson.