a plant, Eschscholtzia californica, of the poppy family, having feathery bluish foliage and showy, orange-yellow flowers: the state flower of California.
British Dictionary definitions for California poppy
California poppy
noun
1.
a papaveraceous plant, Eschscholtzia californica, of the Pacific coast of North America, having yellow or orange flowers and finely divided bluish-green leaves Also called eschscholzia, eschscholtzia