This occurs on base-rich soils from the Carolina Piedmont to the southern Interior Low Plateaus and adjacent Gulf Coastal Plain. In Ky. the anomalous disjunct coll. from "rich woods north of Augusta" in BRAC (KY) was made by a student, but wiith no other reason to doubt authenticity; it has an unusually pale, greenish ovary. Some populations in MCRE and WAYN appear transitional to luteum, but trilliologists insist that these species are distinct (FNA 26). T. cuneatum typically has purple to maroon flowers, sometimes greenish or yellowish, but never the "greenish to buttercup yellow" (F) of luteum. The odor of is "musk- or spice-scented or foetid" in cuneatum, versus "lemon-scented" in luteum (Cr). See also notes under viride.