Trilliums may just have the most bizarre common names of any group of plants out there.  You have Wake Robins, Toad Shades, Wood Lilies, and with this one, Bloody Butchers!  The color of this plants three petals does give a pretty straight forward idea of where the name comes from though.  A deep red to maroon color resembles the color that you might see of a fresh cut piece of beef at your local butcher shop!