Species Detail - Common Knapweed (Centaurea nigra sens. lat. (=nigra/debeauxii)) - Species information displayed is based on the dataset "The Flora of County Clare".

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
Centaurea nigra sens. lat. (=nigra/debeauxii)
Common Knapweed
NHMSYS0021232322 RecommendedWell-formed
N/A
cenig
N/A
Flowering plant
Species sensu lato
11
8
5
02/09/2012
13/06/2013
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 sens. lat. (=nigra/debeauxii)), accessed 13 June 2025, <https://maps.biodiversityireland.ie/Dataset/22/Species/304316>

Records per month (across all datasets)

Records per year (across all datasets)