Polygonaceae
Polygonum spergulariiforme
- Family
- Polygonaceae
- Genus
- Polygonum
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Synonyms
- Polygonum douglasii subsp. spergulariiforme (Meisn. ex Small) J.C.Hickman
Flowers
- In flower
- September to October (from 14 flowering iNaturalist observations worldwide)
Photos
FlowerPhoto: Kyle Elshoff, CC BY 4.0, from iNaturalist 
FlowerPhoto: Ben Keen, CC0, from iNaturalist 
Photo: Shaan Aroeste, CC BY 4.0, from iNaturalist 
Photo: Noah How, CC BY 4.0, from iNaturalist 
Photo: Spencer Quayle, CC0, from iNaturalist 
Photo: Roger Raiche, CC BY 4.0, from iNaturalist 
Photo: Randal, CC0, from iNaturalist 
Photo: Chaye Vail, CC BY 4.0, from iNaturalist 
Photo: Murray McGoogan, CC BY 4.0, from iNaturalist 
Photo: Scott Loarie, CC0, from iNaturalist 
Photo: Matt Berger, CC BY 4.0, from iNaturalist 
Photo: Randal, CC0, from iNaturalist
More in Polygonum
- Yard knotweedPolygonum avicularePolygonaceae
- Oval-leaf knotweedPolygonum arenastrumPolygonaceae
- Polygonum maritimumPolygonaceae
- Asiatic tearthumbPolygonum perfoliatumPolygonaceae
- Bellard's smartweedPolygonum patulumPolygonaceae
- European knotweedPolygonum arenariumPolygonaceae
- Narrowleaf knotweedPolygonum bellardiiPolygonaceae
- Polygonum cognatumPolygonaceae
- Horse-tail knotweedPolygonum equisetiformePolygonaceae
- KnotweedPolygonum oxyspermumPolygonaceae
- Douglas' knotweedPolygonum douglasiiPolygonaceae
- Erect knotweedPolygonum erectumPolygonaceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); popularity from Wikidata (2026-10-26, CC0 1.0). About our plant data.