Taxonomy

• Kingdom: Plantae
• Clade: Tracheophytes
• Clade: Angiosperms
• Clade: Eudicots
• Clade: Superasterids
• Order: Caryophyllales
• Family: Polygonaceae
• Subfamily: Polygonoideae
• Tribe: Polygoneae
• Subtribe: Reynoutriineae
• Genus: Reynoutria
• Species: Reynoutria japonica

Presence

Introduced invasive.

Conservation status

• Red List (Metropolitan France): NA Not Applicable

Notes

Possible confusion with R. sachalinensis (F.Schmidt) Nakai, 1922 or R. × bohemica Chrtek & Chrtková, 1983, whose leaves have a (sub-)cordate base, while those of R. japonica have a truncate base.

Hybridizes with R. sachalinensis (F.Schmidt) Nakai, 1922 to produce R. × bohemica Chrtek & Chrtková, 1983, I.

Photographs

Sources

• Tison, J.M., & de Foucault, B. (2014). Flora Gallica : Flore de France (p. 919). Biotope.