Poppy?

POPPY(?), CHICAGO BOTANIC GARDEN, GLENCOE, ILLINOIS, APRIL 6, 2012

Pentax K-5
SMC Pentax-DA 55-300 at 300mm
1/2000 sec. f14
ISO 1600

I have no idea what variety this bloom is—some subspecies of corn poppy?—so if you do, please let me know. I'd taken my long 55-300mm lens along to the garden intending to shoot birds, but seeing none, shot flowers instead. The 55-300 focuses remarkably close and makes a decent impromptu macro lens.