Species Detail - Knotgrass (Polygonum aviculare) - Species information displayed is based on the dataset "BSBI tetrad data for Ireland".

Terrestrial Map - 10km

Distribution of the number of records recorded within each 10km grid square (ITM).
Live Map

Marine Map - 50km

Distribution of the number of records recorded within each 50km grid square (WGS84).
Live Map
Polygonum aviculare
Knotgrass
Polygonum aviculare sens.str., Polygonum aviculare var. heterophyllum, Polygonum heterophyllum nom. illegit., Polygonum littorale sensu Gren. & Godr. et auct., non Link ex Pers.
N/A
poavi
L.
flowering plant
Species
340
188
90
01/01/1970
31/12/2010
1 January (recorded in 1970)
8 December (recorded in 2005)
Botanical Society of the British Isles, BSBI tetrad data for Ireland, National Biodiversity Data Centre, Ireland, Knotgrass (Polygonum aviculare), accessed 27 May 2020, <https://maps.biodiversityireland.ie/Dataset/9/Species/39373>

Records per month (across all datasets)

Records per year (across all datasets)