Matilija poppy

[ muh-til-uh-hah ]
/ məˈtɪl əˌhɑ /

noun

a tree poppy, Romneya coulteri, of California and Mexico, having thin, paperlike leaves and large, solitary, white flowers.

Origin of Matilija poppy

1900–05, Americanism; after the Matilija Canyon, Ventura County, California