page_title: Reynoutria
section_title: Species
hierarchical_section_title: Reynoutria / Taxonomy / Species
context_page_description: Reynoutria is a genus of flowering plants in the family Polygonaceae. The genus is native to eastern China, Eastern Asia and the Russian Far East, although species have been introduced to Europe and North America. Members of the genus, including R. japonica and its hybrid with R. sachalinensis, are highly invasive plants.
context_section_description: As of February 2019, Plants of the World Online recognized the following species:
  Reynoutria × bohemica Chrtek & Chrtková
  Reynoutria ciliinervis (Nakai) Moldenke
  Reynoutria japonica Houtt. – Asian knotweed, Japanese knotweed
  Reynoutria multiflora (Thunb.) Moldenke – Chinese knotweed
  Reynoutria sachalinensis (F.Schmidt) Nakai – giant knotweed, Sakhalin knotweed
caption: Reynoutria sachalinensis
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