Photo: Oenothera fruticosa.

Flowering tops. Helsinki, Finland. Planted. 2000-06-01.
Oenothera fruticosa Roth Engl.: golden sundrops, narrowleaf evening-primrose. Deu.: Strauchige Nachtkerze. Suom.: kultahelokki. Sven.: gullnattljus. Bot. syn.: Kneiffia glauca (Michx.) Spach, Kneiffia hybrida (Michx.) Small, Kneiffia latifolia Rydb., Kneiffia tetragona (Roth) Pennell, Oenothera tetragona Roth
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Photo: Oenothera fruticosa.