Species Detail - Hard Shield-fern (Polystichum aculeatum) - Species information displayed is based on the dataset "Ireland's BioBlitz".

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
Polystichum aculeatum
Hard Shield-fern
NBNSYS0000002074 UnverifiedUnverified
N/A
poacu
(L.) Roth
fern
Species
6
5
5
21/05/2011
24/05/2014
27 January (recorded in 2019)
25 November (recorded in 2010)
Collated by the National Biodiversity Data Centre from different sources, Ireland's BioBlitz, National Biodiversity Data Centre, Ireland, Hard Shield-fern (Polystichum aculeatum), accessed 28 April 2025, <https://maps.biodiversityireland.ie/Dataset/189/Species/127362>

Records per month (across all datasets)

Records per year (across all datasets)