Photo: Oenothera biennis 11.

Flowering top. Kew Garden, London, UK. Planted. 2004-06-04.
Oenothera biennis L. Engl.: common evening-primrose, evening primrose, tree primrose. Deu.: Gewöhnliche Nachtkerze, Nachtkerze, Grosse Nachtkerze, Rapontika. Suom.: iltahelokki, helokki. Sven.: nattljus, gulltrav, vanligt nattljus. Fran.: onagre. Ital.: enotera. Bot. syn.: Oenothera muricata L.
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Photo: Oenothera biennis 11.