World flora Plants of the world floraExplore

• Families
• Genera
• Species 26

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Polygonum ajanense (Regel & Tiling) Grig.

 

1 1 Observation

Polygonaceae

Polygonum arenarium Waldst. & Kit.

European knotweed

9 4 Observations

Polygonaceae

Polygonum arenastrum Boreau

Oval-leaf knotweed

170 105 Observations

Polygonaceae

Polygonum aviculare L.

Knotgrass

5,011 3,861 Observations

Polygonaceae

Polygonum bellardii All.

Narrowleaf knotweed

27 11 Observations

Polygonaceae

Polygonum cognatum Meisn.

Indian Knotgrass

36 25 Observations

Polygonaceae

Polygonum divaricatum L.

 

1 1 Observation

Polygonaceae

Polygonum douglasii Greene

Douglas's knotweed

5 4 Observations

Polygonaceae

Polygonum ellipticum Willd. ex Spreng.

 

16 15 Observations

Polygonaceae

Polygonum equisetiforme Sm.

Horsetail Knotweed

173 104 Observations

Polygonaceae

Polygonum glaucum Nutt.

Seaside Knotweed

19 19 Observations

Polygonaceae

Polygonum majus (Meisn.) Piper

Wiry Knotweed

2 2 Observations

Polygonaceae

Polygonum maritimum L.

Sea Knotweed

685 344 Observations

Polygonaceae

Polygonum microcephalum D. Don

Red Dragon

4 4 Observations

Polygonaceae

Polygonum oxyspermum C.A.Mey. & Bunge

Strand-Vogelknöterich

1 1 Observation

Polygonaceae

Polygonum paronychioides C.A. Mey.

 

1 1 Observation

Polygonaceae

Polygonum parryi Greene

Parry's Knotweed

1 1 Observation

Polygonaceae

Polygonum plebeium R.Br.

Least Concern

Common knotweed

3 1 Observation

Polygonaceae

Polygonum polygaloides Meisn.

Polygala knotweed

1 1 Observation

Polygonaceae

Polygonum recumbens Royle ex Bab.

 

10 1 Observation

Polygonaceae

Polygonum romanum Jacq.

Least Concern

 

3 2 Observations

Polygonaceae

Polygonum sanguinaria Remy

 

1 1 Observation

Polygonaceae

Polygonum scoparium Req. ex Loisel.

 

61 38 Observations

Polygonaceae

Polygonum stelligerum Cham.

 

9 6 Observations

Polygonaceae

Polygonum tenue Michx.

Pleatleaf knotweed

3 3 Observations

Polygonaceae

Polygonum virginianum L.

Jumpseed

101 72 Observations

Polygonaceae

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