Species Detail - Knotgrass (Polygonum aviculare) - Species information displayed is based on the dataset "Discrete vascular plant surveys".
Terrestrial Map - 10km
Terrestrial Map - 10km
Distribution of the number of records recorded within each 10km grid square (ITM).Marine Map - 50km
Marine Map - 50km
Distribution of the number of records recorded within each 50km grid square (WGS84).
Polygonum aviculare
Knotgrass
NHMSYS0000455480
RecommendedWell-formed
Knotgrass agg. , Polygonum aviculare sens.str. L., Polygonum aviculare var. heterophyllum Munshi & Javeid, Polygonum aviculare var. heterophyllum Munshei & Javeid, Polygonum heterophyllum nom. illegit. Lindm., Polygonum littorale sensu Gren. & Godr. et auct., non Link ex Pers.
N/A
poavi
L.
Flowering plant
Species
14
10
8
01/07/2005
25/08/2013
1 January (recorded in 1970)
8 December (recorded in 2005)
Collated by the National Biodiversity Data Centre from different sources, Discrete vascular plant surveys, National Biodiversity Data Centre, Ireland, Knotgrass (Polygonum aviculare), accessed 19 January 2026, https://maps.biodiversityireland.ie/Dataset/190/Species/39373