Species Detail - Greater Duckweed (Spirodela polyrhiza) - Species information displayed is based on the dataset "Water Framework Directive Lake Macrophyte Status Survey Data 2007 to 2019".
Terrestrial Map - 10km
Terrestrial Map - 10km
Distribution of the number of records recorded within each 10km grid square (ITM).Marine Map - 50km
Marine Map - 50km
Distribution of the number of records recorded within each 50km grid square (WGS84).
Spirodela polyrhiza
Greater Duckweed
Great Duckweed, Lemna polyrhiza
N/A
sppol
(L.) Schleid.
flowering plant
Species
103
18
7
18/07/2007
28/08/2019
21 May (recorded in 2011)
29 September (recorded in 2015)
Environmental Protection Agency, Water Framework Directive Lake Macrophyte Status Survey Data 2007 to 2019, National Biodiversity Data Centre, Ireland, Greater Duckweed (Spirodela polyrhiza), accessed 22 February 2025, <https://maps.biodiversityireland.ie/Dataset/365/Species/45466>