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Sundrops (Oenothera fruticosa [syn. Oenothera tetragona]), a biennial to perennial species of evening primrose native to eastern North America. It is a cultivated species, particularly the selected cultivars, and also a weed, as it has naturalised in many areas, especially in gravelly soils, such as the riverbeds of the eastern South Island of New Zealand, where this image was taken. oenothera-3186htm'>Oenothera. Onagraceae.
![Sundrops (<i>Oenothera fruticosa [syn. Oenothera tetragona]), a biennial to perennial species of evening primrose native to eastern North America. It is a cultivated species, particularly the selected cultivars, and also a weed, as it has naturalised in many areas, especially in gravelly soils, such as the riverbeds of the eastern South Island of New Zealand, where this image was taken. oenothera-3186htm'>Oenothera. <a href='onagraceae-plant-family-photoshtml'>Onagraceae</a>.](./data/media/1/CFGet59.jpg "Sundrops (<i>Oenothera fruticosa [syn. Oenothera tetragona]), a biennial to perennial species of evening primrose native to eastern North America. It is a cultivated species, particularly the selected cultivars, and also a weed, as it has naturalised in many areas, especially in gravelly soils, such as the riverbeds of the eastern South Island of New Zealand, where this image was taken. oenothera-3186htm'>Oenothera. <a href='onagraceae-plant-family-photoshtml'>Onagraceae</a>.")