Centaurea nigra sens. lat. (=nigra/debeauxii)
(common knapweed, lesser knapweed, hardheads)

Subtaxon Example images Rank Featured
subtaxa		 No of
images		 No of
ID refs
Centaurea nigra var nigra
Common Knapweed
Plant (Click to open)
 		Variety 6 images
Centaurea nigra var radiata
Common Knapweed - Rayed Form
(Click to open)
 		Variety 23 images
Taxonomic hierarchy:
Species sensu latoCentaurea nigra sens. lat. (=nigra/debeauxii) (common knapweed, lesser knapweed, hardheads)
GenusCentaurea (knapweeds and star-thistles)
TribeCardueae (“thistles”)
SubfamilyLACTUCOIDEAE (“dandelions”)
FamilyASTERACEAE (daisies, dandelions and thistles, composite)
OrderASTERALES (daisies, dandelions, thistles and bell flowers)
SubclassEU-DICOTS (dicotyledonous flowering plants)
ClassMAGNOLIOPSIDA (flowering plants)
PhylumTRACHEOPHYTA (vascular plants)
KingdomPLANTAE (plants)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
Records of Centaurea nigra sens. lat. (=nigra/debeauxii) (common knapweed, lesser knapweed, hardheads) :
1: Centaurea nigra sens. lat. (=nigra/debeauxii) (common knapweed, lesser knapweed, hardheads)
25 Jul 2010 OSGR: SY98 50° 40’ N, 2° 10’ W Vice County: Dorset (VC 9) England
in flower . Photos: pollen
Image 1: Pollen grains - focused on profile - magnifiedImage 2: Pollen grains - focused on profile - magnified (2)Image 3: Pollen grains - focused on profile - highly magnifiedImage 4: Pollen grains - focused on surface - magnifiedImage 5: Pollen grains - focused on surface - highly magnifiedImage 6: Pollen grains - focused on surface - highly magnified (2)Image 7: Pollen grains - focused on surface - highly magnified (3)Image 8: Pollen grains - low maginification - microscope low magnification
2: Centaurea nigra sens. lat. (=nigra/debeauxii) (common knapweed, lesser knapweed, hardheads)
OSGR: ZZ00 44° 40’ N, 10° 40’ E United Kingdom
seeds (from commercial supplier)
Image 1: SeedsImage 2: Seeds (2)Image 3: Seeds (3)Image 4: Seeds (4)

Centaurea nigra sens. lat. (=nigra/debeauxii) (common knapweed, lesser knapweed, hardheads) may be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Centaurea nigra sens. lat. (=nigra/debeauxii) (common knapweed, lesser knapweed, hardheads)
BioInfoBioInfo (www.bioinfo.org.uk) has 47 host/parasite/foodplant and/or other relationships for Centaurea nigra sens. lat. (=nigra/debeauxii) (common knapweed, lesser knapweed, hardheads)
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