Polygonum arenastrum Boreau
(Equal-leaved Knotgrass)

Taxonomic hierarchy:
SpeciesPolygonum arenastrum (Equal-leaved Knotgrass)
GenusPolygonum (knotgrass)
FamilyPOLYGONACEAE (docks and knotgrasses)
OrderCARYOPHYLLALES (pinks, goosefoots and docks)
SubclassEU-DICOTS (dicotyledonous flowering plants)
ClassMAGNOLIOPSIDA (flowering plants)
PhylumTRACHEOPHYTA (vascular plants)
KingdomPLANTAE (plants)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
Records of Polygonum arenastrum (Equal-leaved Knotgrass) :
1: Polygonum arenastrum (Equal-leaved Knotgrass)
21 Aug 2001 OSGR: SU56 51° 20’ N, 1° 10’ W Vice County: Berks (VC 22) England
growing from crack in asphalt pavement
Image 1: Flowering shoot - close-upImage 2: Flowering shoot - close-up (2)Image 3: Flowering shoot - close-up (3)Image 4: Flowering shoot - close-up (4)Image 5: Inflorescence - close-upImage 6: Inflorescence - close-up (2)Image 7: Inflorescence - close-up (3)Image 8: Inflorescence - close-up (4)Image 9: PlantImage 10: Flowering shoot - top viewImage 11: Flowering shoot - top view (2)Image 12: Flowering shoot - undersideImage 13: Flowering shoot - underside (2)Image 14: Flowering shoot - underside and top viewImage 15: Flowering shoot - underside - enlargedImage 16: Flowering shoot - underside - enlarged (2)Image 17: Flowering shoot - underside - enlarged (3)Image 18: Flowering shoot - underside - enlarged (4)Image 19: Flowering shoot - underside - enlarged (5)Image 20: Fruiting perianth and ochra - magnifiedImage 21: Fruiting perianths - magnifiedImage 22: Fruiting perianths - magnified (2)Image 23: Perianths - magnifiedImage 24: Seed - magnifiedImage 25: Seed - magnified (2)Image 26: Seeds - magnifiedImage 27: Seeds - magnified (2)Image 28: Seeds - magnified (3)
2: Polygonum arenastrum (Equal-leaved Knotgrass)
10 Aug 1974 OSGR: SE65 53° 60’ N, 1° 0’ W England

specimen with a few branches

Image 1: Inflorescence - enlargedImage 2: Ochrea and inflorescence - enlargedImage 3: Seed, leaf, flower - enlarged

Polygonum arenastrum (Equal-leaved Knotgrass) may be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Polygonum arenastrum (Equal-leaved Knotgrass)
BioInfoBioInfo (www.bioinfo.org.uk) has 8 host/parasite/foodplant and/or other relationships for Polygonum arenastrum (Equal-leaved Knotgrass)
Creative Commons License
This website is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Licence.

Unless otherwise expressly stated, all original material on the BioImages website by Malcolm Storey is licensed under the above Creative Commons Licence.

Photographs from other photographers are used with permission but not included under the above CC licence.

BioImages - Virtual Field-Guide (UK)