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- ›Polygoninae
Wireweeds
Polygonella
Polygonum is a genus of about 130 species of flowering plant in the buckwheat and knotweed family Polygonaceae. Common names include knotweed and knotgrass. In the Middle English glossary of herbs Alphita (c. 1400–1425), it was known as ars-smerte. There have been various opinions about how broadly the genus should be defined. For example, buckwheat (Fagopyrum esculentum) has sometimes been included in the genus as Polygonum fagopyrum. Former genera such as Polygonella have been subsumed into
11 branches of this genus, most-observed first
Coastal jointweed
speciesPolygonella articulata
October Flower
speciesPolygonella polygama
Sandhill wireweed
speciesPolygonella robusta
Tall Jointweed
speciesPolygonella gracilis
Small's Jointweed
speciesPolygonella myriophylla
American jointweed
speciesPolygonella americana
fringed jointweed
speciesPolygonella ciliata
Largeleaf Jointweed
speciesPolygonella macrophylla
Florida jointweed
speciesPolygonella basiramia
sandhill jointweed
speciesPolygonella fimbriata
Parks' Jointweed
speciesPolygonella parksii
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 Polygonella 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 127328.