Centaurea L.
(knapweeds and star-thistles)

Subtaxon Example images Rank Featured
subtaxa		 No of
images		 No of
ID refs
Centaurea calcitrapa
Red Star-thistle
(Click to open)
 		Species 12 images
Centaurea cyanus
Cornflower
(Click to open)
 		Species 2 images
Centaurea nigra sens. lat. (=nigra/debeauxii)
common knapweed, lesser knapweed, hardheads
(Click to open)
 		Species sensu lato 2 subtaxa 41 images
Centaurea scabiosa
Greater Knapweed
(Click to open)
 		Species 2 subtaxa 25 images
Taxonomic hierarchy:
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)

Identification Works

AuthorYearTitleSource
Rand, M. 2009 Hampshire Flora Group: Asteraceae workshop. http://hantsplants.org.uk/articles.php

Centaurea (knapweeds and star-thistles) may also be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Centaurea (knapweeds and star-thistles)
BioInfoBioInfo (www.bioinfo.org.uk) has 182 host/parasite/foodplant and/or other relationships for Centaurea (knapweeds and star-thistles)
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