A friend found this seedling growing in a pot with seeds he planted. I think it may be in the Apiaceae family but have had no luck finding anything that looks quite like this. Thank you for any help you may provide.
When I suggested to my friend that his seedling may be a member of the Apiaceae family but not likely Angelica archangelica, Heracleum lanatum (Cow Parsnip) or Heracleum mantegazzianum (Giant Hogweed), he remembered planting Angelica gigas last year and now thinks a seed may have escaped. So, mystery solved!