Species Detail - Common Knapweed (Centaurea nigra) - Species information displayed is based on the dataset "BSBI tetrad data for Ireland".
Terrestrial Map - 10km
Terrestrial Map - 10km
Distribution of the number of records recorded within each 10km grid square (ITM).Marine Map - 50km
Marine Map - 50km
Distribution of the number of records recorded within each 50km grid square (WGS84).
Centaurea nigra
Common Knapweed
Black Knapweed, Hardhead
N/A
cenig
L.
flowering plant
Species
1313
347
112
01/01/1930
31/12/2010
1 January (recorded in 1970)
29 December (recorded in 2018)
Botanical Society of the British Isles, BSBI tetrad data for Ireland, National Biodiversity Data Centre, Ireland, Common Knapweed (Centaurea nigra), accessed 18 April 2024, <https://maps.biodiversityireland.ie/Dataset/9/Species/29714>