An annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers.

synoniemen: bachelor's button, Centaurea cyanus, cornflower.

Nederlands: blauwbol, korenbloem
Pools: modrak, chaber bławatek, bławatek

Blowfly with iridescent blue body; makes a loud buzzing noise in flight.

synoniem: Calliphora vicina.

Pools: mucha niebieska, plujka pospolita, mucha plujka