- Plants
- ›Vascular Plants
- ›flowering plants
- ›Dicots
- ›pinks, cactuses, and allies
- ›knotweed family
- ›Polygonoideae
- ›Polygoneae
- ›Reynoutriinae
Rhizomatous Knotweeds
Reynoutria
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 (Japanese knotweed) and its hybrid with R. sachalinensis, are highly invasive plants.
8 branches of this genus, most-observed first
Japanese knotweed
speciesReynoutria japonica
Bohemian Knotweed
hybridReynoutria × bohemica
Giant Knotweed
speciesReynoutria sachalinensis
tuber fleeceflower
speciesReynoutria multiflora
Dwarf Knotweed
speciesReynoutria compacta
Reynoutria forbesii
speciesReynoutria forbesii
Moravian Knotweed
hybridReynoutria × moravica
Crenulate Knotweed
speciesReynoutria ciliinervis
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the old herbals & bestiaries
In the stacks
Searching the stacks…
Every page naming Reynoutria in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 379255.