Species Detail - Greater Duckweed (Spirodela polyrhiza) - 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).
Great Duckweed, Lemna polyrhiza
21 May (recorded in 2011)
29 September (recorded in 2015)
Dr David Thomas Holyoak, Irish vascular plant data 1999-2009, National Biodiversity Data Centre, Ireland, Greater Duckweed (Spirodela polyrhiza), accessed 04 August 2020, <https://maps.biodiversityireland.ie/Dataset/35/Species/45466>