Daucus carota carota

Daucus carota carota, the wild carrot (aka bishop's lace, or queen anne's lace) is one of the parents of our domesticated carrots.
The other parent is either the south-european subspecies "maximus" or the oriental subspecies "afghanicus".

In this photo we have a close-up of the rolled-up fruit body of the plant. While the seeds ripen it stays in this position, that is sometimes called the "bird's nest form". When the seeds are ripe the fruit body reacts on humidity, while it is dry the fruit body opens up to enable the release of the seeds, when it gets wetter it rolls back up into the bird's nest form.

The root of this bianual plant is edible, just like the common carrot. But only in the first year, after that it becomes to woody to consume.

If you choose to collect some wild carrots to try and see how they taste, be careful that you don't confuse them with the very similar Water Hemmlock - which is a poisonous plant that can be deadly to eat.

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Some more on the wild carrot here:
[link]