Orlaya grandiflora

About

Orlaya grandiflora, the white laceflower, is a species of flowering plant in the family Apiaceae, native to Mediterranean Europe. Growing to 90 cm (35 in), this is a multi-branched annual with divided ferny leaves, and flattish panicles of pure white flowers over a long period in summer. The uneven size of the individual florets gives it the appearance of lace, especially when planted in large swathes.

Summary from Wikipedia