Centaurea cyanus, commonly known as cornflower or bachelor's button, is an annual flowering plant in the family Asteraceae native to Europe. In the past...

but that term more often specifically means either C. cyanus (the annual cornflower) or Centaurea montana (the perennial cornflower). The common name "centaury"...

outermost ray florets. It may be distinguished from the cornflower, Centaurea cyanus, by having a single (rarely up to three) flower heads, and by its being...

Syria. Centaurea cyanoides looks similar to the European cornflower Centaurea cyanus although C.cyanoides is much smaller, only 2-3 cm wide. It grows only...

Centaurea cuneifolia Sm. Centaurea cuspidata Vis. Centaurea cyanoides Wahlenb. Centaurea cyanomorpha Stef. & T.Georgiev Centaurea cyanus L. Centaurea...

The plant genus Cyanus is nowadays included in Centaurea. Cyanus is a genus of flies in the family Calliphoridae. C. elongatus (Hough, 1898) Hall, D. G...

and New Zealand Blue ant, a species of large solitary parasitic wasp Centaurea cyanus, the cornflower Graphium sarpedon, common bluebottle, or blue triangle...

names like Centaurea cyanus can suggest that cyanus is an adjective which should agree with Centaurea, i.e. that the name should be Centaurea cyana, whereas...

Summer field in Belgium (Hamois). The blue flowers are Centaurea cyanus and the red are Papaver rhoeas....

and Guatemala. Centaurea cyanus, native to Europe, including the British Isles and cultivated as an annual ornamental plant. Centaurea montana, native...