Species Detail - Common Knapweed (Centaurea nigra) - Species information displayed is based on the dataset "The Flora of County Clare".
Terrestrial Map - 10kmDistribution of the number of records recorded within each 10km grid square (ITM).
Marine Map - 50kmDistribution of the number of records recorded within each 50km grid square (WGS84).
Black Knapweed, Hardhead
1 January (recorded in 1970)
29 December (recorded in 2018)
Botanical Society of the British Isles, The Flora of County Clare, National Biodiversity Data Centre, Ireland, Common Knapweed (Centaurea nigra), accessed 11 July 2020, <https://maps.biodiversityireland.ie/Dataset/22/Species/29714>