Daucus carota (common names include wild carrot, (UK) bird's nest, bishop's lace, and Queen Anne's lace (North America)

Wild carrot is a member of the family once named Umbelliferae - so called because their flowers are arranged into a flat umbrella-like head or umbel (the modern name of Apiaceae refers to their attractiveness to bees). Carrot can be identified from other common members of this family because the bracts fringing the umbel are three forked. Wild carrot flowers from June to September, most flowers being off white but quite often with a small central group or a single central flower of a dark red. Once flowered the umbel folds inward, clearly showing the forked bracts, and the developing head of seed becomes concave. The whole structure has a distinctive ‘bird’s nest’ appearance which can be present throughout winter. http://wildseed.co.uk/species/view/44