Species Detail - Ray's Knotgrass (Polygonum oxyspermum) - Species information displayed is based on the dataset "Irish vascular plant data 1999-2009".
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).
C.A. Mey. & Bunge
7 June (recorded in 2005)
23 October (recorded in 2016)
Dr David Thomas Holyoak, Irish vascular plant data 1999-2009, National Biodiversity Data Centre, Ireland, Ray's Knotgrass (Polygonum oxyspermum), accessed 14 August 2020, <https://maps.biodiversityireland.ie/Dataset/35/Species/44054>