Plant of the Week 59 1/2 is
Trillium recurvatum, commonly known as Prairie Trillium, or Bloody Butcher.
Congratualtions to dan deutekom (as always), agla, groundwork, and Lanelle who got both the genus and species right.
Half credit to phototropic1, Diamondscapes, and trees who knew POTW 59 1/2 was a Trillium.
Several people guessed
Trillium cuneatum, or Wild Sweet Betsy. Thats a great name for a movie, but definitely not a slasher flick.
And for the GTXers wondering about the "59 1/2", the answer is found in
Plant of the Week 57