white baneberry, Actaea pachypoda

This is called white not because of these flowers, but because of the berries. This plant is also called doll's-eyes because of the white berries with a red dot where the pistil was. This image is from Headlands Park, right at the northern tip of Michigan's lower peninsula. What is it that makes flowers larger and brighter in the north, or in the western mountains? Do they just have to try harder in the shorter season? In any case, I've never seen as large and bright a baneberry here in the south. Of course, it's still only about an inch across. White baneberries grow in AL, AR, CT, DE, FL(E), GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, NE, NH, NJ, NY(V), OH, OK, PA, RI, SC, TN, VA, VT, WI, WV, NB, NS, ON, PE, and QC. Emmet Co, MI, 5/25/12.