About Knorringia sibirica (Laxm.) Tzvelev
Knorringia sibirica (Laxm.) Tzvelev is a species of flowering plant belonging to the family Polygonaceae. Its native range extends from Siberia to Korea. It was first formally described under the name Polygonum sibiricum by Erik Laxmann in 1773. Nikolai Tzvelev later transferred the species to the genus Knorringia in 1987.