Species Detail - Knotgrass (Polygonum aviculare) - Species information displayed is based on the dataset "The Flora of County Waterford".
Terrestrial Map - 10kmDistribution of the number of records recorded within each 10km grid square (ITM).
Marine Map - 50kmDistribution of the number of records recorded within each 50km grid square (WGS84).
Polygonum aviculare sens.str., Polygonum aviculare var. heterophyllum, Polygonum heterophyllum nom. illegit., Polygonum littorale sensu Gren. & Godr. et auct., non Link ex Pers.
1 January (recorded in 1970)
8 December (recorded in 2005)
Paul R Green, The Flora of County Waterford, National Biodiversity Data Centre, Ireland, Knotgrass (Polygonum aviculare), accessed 22 October 2021, <https://maps.biodiversityireland.ie/Dataset/23/Species/39373>