Ozark green trillium, Trillium viridescens

This sort of green trillium can also have maroon or yellowish flowers, or most any shade in between. Growing it in gardens, as many have, is a little counter intuitive. It only thrives and persists in clay soils. Ozark green grows in AR, KS, MO, OK, and TX. Beal Gardens, Michigan State University, 5/3/12.