BioImages (UK)
BIOTA
(living things)
Eukaryota
(eukaryotes)
PLANTAE
(plants)
SPERMATOPHYTA
(vascular plants)
MAGNOLIOPSIDA
(flowering plants)
MAGNOLIIDAE
(dicotyledonous flowering plants)
ASTERACEAE
(daisies, dandelions and thistles - formerly Compositae)
Cardueae
(“thistles”)
Centaurea
(knapweeds and star-thistles)
Centaurea nigra agg
(lesser knapweeds)
Centaurea nigra
(Common Knapweed, Lesser Knapweed, Hardheads)
Centaurea nigra var. radiata
(Common Knapweed - Rayed Form)
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BioImages: The Virtual Field-Guide (UK)

Centaurea nigra var. radiata (Common Knapweed - Rayed Form)

Records (and photo sets)

Taxon Summary Date Vice-county Country #photos #macrophotos
Centaurea nigra var. radiata Plant 14 July 2001 Berks England 5 15
Centaurea nigra var. radiata Plant 4 September 1978 South Devon England 3

Suggested Literature

Centaurea nigra var. radiata may be covered by literature listed under:

BIOTA
(living things)		 Eukaryota
(eukaryotes)		 PLANTAE
(plants)		 SPERMATOPHYTA
(vascular plants)		 MAGNOLIOPSIDA
(flowering plants)		 MAGNOLIIDAE
(dicotyledonous flowering plants)		 ASTERACEAE
(daisies, dandelions and thistles - formerly Compositae)		 Cardueae
(“thistles”)

Feeding and other inter-species relationships

Associated with Centaurea nigra var. radiata:

Centaurea nigra var. radiata may be associated with taxa listed at higher taxonomic level

MAGNOLIOPSIDA
(flowering plants)		 MAGNOLIIDAE
(dicotyledonous flowering plants)		 ASTERACEAE
(daisies, dandelions and thistles - formerly Compositae)		 Centaurea
(knapweeds and star-thistles)		 Centaurea nigra agg
(lesser knapweeds)		 Centaurea nigra
(Common Knapweed, Lesser Knapweed, Hardheads)

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Unless otherwise expressly stated, all original material on the BioImages website by Malcolm Storey is licensed under a Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales