Photo: Oenothera macrocarpa 05.
Flowering plant. Botanical garden Kaisaniemi, Helsinki, Finland. Planted. 2006-08-31.
Oenothera macrocarpa Nutt.
Engl.: bigfruit evening-primrose, Ozark sundrops.
Deu.: Missouri-Nachtkerze.
Suom.: isohelokki.
Sven.: storblommigt nattljus.
Bot. syn.: Oenothera fremontii S. Wats., Oenothera missouriensis Sims