| Plants : Asteraceae | Ferns and Flowering Plants |
Centaurea nigra L.
Common Knapweed
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| Centaurea nigra |
Description: A very common pernnial of grassy places; tall (up to about 2 feet) with blue thistle-like flower heads and narrow-oval leaves.
All names: Centaurea nigra L.; Centaurea nemoralis Jordan; Centaurea nigra ssp. nemoralis (Jordan) Gremli; Centaurea dedeauxii ssp. nemoralis (Jordan) Dostal; Centaurea obscura Jord.
Distribution Map from NBN: Centaurea nigra at National Biodiversity Network mapping facility, data for UK.
iNaturalist: Centaurea nigra at iNaturalist World Species Observations database.
| Hackney, P., 2026. Centaurea nigra. L.. [In] Flora of Northern Ireland. https://habitas.org/flora/species.php?item=4506. Accessed on 2026-11-02. |