- Plants
- ›Vascular Plants
- ›flowering plants
- ›Dicots
- ›pinks, cactuses, and allies
- ›knotweed family
- ›Polygonoideae
- ›Polygoneae
- ›Polygoninae
- ›Polygonum
- ›Duravia
wiry knotweed
Polygonum majus
Polygonum majus is a North American species of flowering plant in the buckwheat family known by the common name wiry knotweed. It grows in the western United States and western Canada, from British Columbia south as far as the Sierra Nevada of northwestern Inyo County in California, east as far as Montana.
Where it lives
Recorded sightings
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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 stacks
Searching the stacks…
Every page naming Polygonum majus 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 78685.