The official state flower of South Dakota is the pasque flower, which is also called the May Day flower, the Easter flower, the prairie crocus, the wind flower, and the meadow anemone. According to legend, pasque flowers grew alongside Jesus' tomb and were part of His resurrection. They're also highly toxic, and for that reason might be a peculiar choice for a cupcake topper, but I'm sure some folks like to live dangerously.
To pipe pasque flowers (or pasqueflowers), you'll need stiff consistency royal icing in purple and yellow, tip #104, tip #3, tip #2, a flower nail (you can use a 6-petal flower template to help keep your petals even), parchment paper squares, a glue stick, a Styrofoam block to rest the nail in, and a dusting pouch filled with a 50/50 mix of powdered sugar and cornstarch. Start by sticking a parchment square to the nail with a dab from the glue stick.