Oenothera clelandii W. Dietrich, P.H. Raven, & W.L. Wagner. Sand Evening-primrose. 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, Tat; < Oenothera rhombipetala Nutt. ex Torr. & A.Gray, misapplied

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACU (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: FACU (taxonomic split from wetland indicator species)
• Great Plains: FACU (taxonomic split from wetland indicator species)
• Midwest: FACU (taxonomic split from wetland indicator species)
• Northcentral & Northeast: FACU (taxonomic split from wetland indicator species)

Heliophily: 9