Species Detail - Knotgrass (Polygonum aviculare) - Species information displayed is based on the dataset "Irish vascular plant data 1999-2009".

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
66
52
28
26/06/2004
07/09/2005
1 January (recorded in 1970)
8 December (recorded in 2005)
Dr David Thomas Holyoak, Irish vascular plant data 1999-2009, National Biodiversity Data Centre, Ireland, Knotgrass (Polygonum aviculare), accessed 04 July 2020, <https://maps.biodiversityireland.ie/Dataset/35/Species/39373>

Records per month (across all datasets)

Records per year (across all datasets)