Species Detail - Greater Duckweed (Spirodela polyrhiza) - 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
Spirodela polyrhiza
Greater Duckweed
Great Duckweed, Lemna polyrhiza
N/A
sppol
(L.) Schleid.
flowering plant
Species
8
8
4
01/08/1999
29/07/2005
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>

Records per month (across all datasets)

Records per year (across all datasets)