Is a perennial spring wildflower rarely over 9 cm tall. It can be distinguished from other trilliums by its single foul smelling, stalkless, flower nestled in the middle of its three leaves. The three maroon petals, maintain a "closed" posture throughout its presence, the petals are occasionally pale green. The leaves are sometimes, but not always mottled with shades of light and dark green. Its species name comes from the Latin word sessilis which means low sitting, and refers to its stalkless flower.
Is native to the central part of the eastern United States and the Ozarks.
Botanical garden in our department, KU Leuven.