EPPO Global Database

Koenigia weyrichii(POLWE)

Code created in: 1996-10-28

Basic information
  • EPPO Code: POLWE
  • Preferred name: Koenigia weyrichii
  • Authority: (F. Schmidt) T.M. Schuster & Reveal


Native to Japan (Hokkaido, northern Honshu), Russia (Far East). Cultivated as an ornamental and possibly naturalized in Europe. Not native to China, but presumably cultivated there. Introduced and potentially invasive in Central Russia.

Other scientific names
Name Authority
Aconogonon weyrichii (F. Schmidt) H. Hara
Persicaria weyrichii (F. Schmidt) Ronse Decraene
Polygonum weyrichii var. alpinum Maximowicz
Reynoutria weyrichii (F. Schmidt) Moldenke

Common names
Name Language
Chinese knotweed English
gråslide Swedish
urajirotade Japanese
ウラジロタデ Japanese
горец Вейриха Russian
таран Вейриха Russian
syren-pileurt Danish
filtslirekne Norwegian
laavatatar Finnish