Species Detail - Greater Duckweed (Spirodela polyrhiza) - Species information displayed is based on the dataset "The Flora of County Waterford".
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)
Paul R Green, The Flora of County Waterford, National Biodiversity Data Centre, Ireland, Greater Duckweed (Spirodela polyrhiza), accessed 29 June 2022, <https://maps.biodiversityireland.ie/Dataset/23/Species/45466>