Queen Anne's Lace
Taken at Skolfield Shores Preserve in Harpswell, Maine.
Daucus carota, whose common names include wild carrot, bird's nest, bishop's lace, and Queen Anne's lace (North America), is a white, flowering plant in the family Apiaceae, native to temperate regions of Europe and southwest Asia, and naturalized to North America and Australia.
Domesticated carrots are cultivars of a subspecies, Daucus carota subsp. sativus. [Wikipedia]