Centaurea cyanus cornflower; bachelor’s button Asteraceae CECY*; Q (DeCandido 2001);

    

Centaurea cyanus.commons.wikimedia.org

Centaurea cyanus.commons.wikimedia.org (Accessed 5/2014).

Centaurea cyanus is an annual or winter annual herb, 20-120 cm tall, young plants white-wooly. 

Leaves alternate to 13 cm long x 1 cm. wide, linear, often white-wooly below, lower ones with a few teeth. 

Flowers usually blue, all tubular but marginal flowers larger, ray-like, flower heads solitary at ends of branches, bracteate base of head 1-1.5 cm long, bracts narrow, dark-fringed near tips, July-Sept.. 

Fruit dry, 1-seedd (achene) with small plume of short bristles. 

Wetland status: UPL. 

Frequency in NYC: Very infrequent. 

Origin: Europe. 

Habitat: open soil; escaped from cultivation.