Species Detail - Greater Duckweed (Spirodela polyrhiza) - Species information displayed is based on the dataset "Irish Vascular Plant Data - Paul Green".

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
NHMSYS0000463934 UnverifiedUnverified
N/A
sppol
(L.) Schleid.
flowering plant
Species
7
3
1
15/09/2011
13/06/2014
21 May (recorded in 2011)
29 September (recorded in 2015)
Paul R Green, Irish Vascular Plant Data - Paul Green, National Biodiversity Data Centre, Ireland, Greater Duckweed (Spirodela polyrhiza), accessed 21 April 2025, <https://maps.biodiversityireland.ie/Dataset/178/Species/45466>

Records per month (across all datasets)

Records per year (across all datasets)