Taxon profile


Equal-leaved Knotgrass
Polygonum arenastrum Boreau

kingdom Plantae - plants »  divisio Magnoliophyta - flowering plants »  class Rosopsida - eudicots »  order Caryophyllales »  family Polygonaceae »  genus Polygonum - knotweed »  agregate Polygonum aviculare agg.

Scientific synonyms

Polygonum aequale Lindm.
Polygonum aviculare subsp. depressum (Meisn.) Arcang.
Polygonum aviculare var. arenastrum (Jord. ex Boreau) Rouy
Polygonum calcatum Lindman
Polygonum montereyense Brenckle

Other names

= Common Knotweed
= Doorweed
= Matweed
= Oval-leaf Knotweed
= Ovalleaf Knotweed


Taxon in country check-lists*

* List of countries might not be complete


Links and literature

CZ Danihelka J., Chrtek J., Kaplan Z., Wild J. (23. 1. 2011): Seznam jmen cévnatých rostlin použitých v nálezové databázi květeny České republiky [], Botanický ústav AV ČR [as Polygonum arenastrum Boreau]
Data retrieved on: 21 November 2013
EN Botanical Society of British Isles [], Botany Department, The Natural History Museum [as Polygonum arenastrum Boreau]
Data retrieved on: 11 May 2012
EN Danin A.: Flora and Vegetation of Israel [] [as Polygonum arenastrum]
Data retrieved on: 26 February 2009
EN Pest Information Wiki [Polygonum_arenastrum_(weed)]

Pest Information Wiki [] [as Polygonum arenastrum Bor.]
Data retrieved on: 5 March 2016
CZ Kubát et al. (2002): Klíč ke květeně České republiky, Academia, Praha [as Polygonum arenastrum Boreau]
EN Danihelka J., Chrtek J. Jr. & Kaplan Z. (2012): Checklist of vascular plants of the Czech Republic, Preslia 84: 647–811 [as Polygonum arenastrum Boreau]
Data retrieved on: 19 September 2014

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