Shoo Fly, Shoofly or Shoo-fly, Peruvian Bluebell, even Apple of Peru ... take your pick, lol. It is native to Peru, and it is known elsewhere as an introduced species and sometimes a weed. It is also kept as an ornamental plant, as at the Reader Rock Garden, where this photo was taken on 17 September 2014. This plant is a member of the Nightshade family, Solanaceae. The green or black-mottled calyces have always fascinated me. Branches of the mature Chinese Lantern-style fruits can be dried and used for winter decoration. I will add a couple of photos of the flower in a comment box below.