Species Detail - Water Fern (Azolla filiculoides) - Species information displayed is based on the dataset "Vascular plants: Online Atlas of Vascular Plants 2012 Onwards".

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

Species image

Azolla filiculoides
Azolla filiculoides
Water Fern
NBNSYS0000002090 RecommendedWell-formed
Invasive Species: Regulation S.I. 477/2011 (Ireland) || Invasive Species: Detailed Risk Assesment || Invasive Species: Medium Risk Invasive Species (2013 Report) || Invasive Species: Regulation S.I. 374/2024 (Ireland) || Invasive Species: The Wildlife (Northern Ireland) Order 1985 || Invasive Species: Detailed Risk Assesment >> Moderate Risk
azfil
Lam.
Fern
Species
35
20
16
24/05/2009
15/02/2025
1 January (recorded in 2008)
31 December (recorded in 2021)
Collated by the National Biodiversity Data Centre from different sources, Vascular plants: Online Atlas of Vascular Plants 2012 Onwards, National Biodiversity Data Centre, Ireland, Water Fern (Azolla filiculoides), accessed 03 September 2025, <https://maps.biodiversityireland.ie/Dataset/409/Species/127372>

Records per month (across all datasets)

National Biodiversity Data Centre, Ireland, Water Fern (Azolla filiculoides), image, accessed 03 September 2025, <https://maps.biodiversityireland.ie/Dataset/409/Species/127372>

Records per year (across all datasets)

National Biodiversity Data Centre, Ireland, Water Fern (Azolla filiculoides), image, accessed 03 September 2025, <https://maps.biodiversityireland.ie/Dataset/409/Species/127372>