Oenothera clelandii W. Dietrich, P.H. Raven, & W.L. Wagner. Phen: Jun-Oct. Hab: Sand prairies, riverbanks, dry, sandy disturbed areas. Dist: MI, WI, and MN south to KY and AR; scattered further east as introductions. Reported for SC (Kartesz 1999, 2021), but based on misidentification.
Origin/Endemic status: Native
Synonymy: = Ar, C, FNA10, Il, K1, K3, K4, Mi, NY, Dietrich & Wagner (1988), Wagner, Hoch, & Raven (2007); = n/a – RAB; < Oenothera rhombipetala Nutt. ex Torr. & A.Gray, misapplied