I'm not going to have time to do justice to this plant tonight. Arum maculatum or Cuckoo-pint or Lords and Ladies or Wild Arum or Snake's head, etc. is a very common plant and one of the first to push up green leaves in the new year.
Its common names relate to its resemblance to male and female genitalia, with Cuckoo-pint meaning 'cuckoo's penis'.
There is an amazing book of photographs and lore associated with this plant which has its own website.