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Onagraceae

 10-Oenothera missouriensis, Missouri primrose

[FMP-field: image]
The Missouri evening primrose (Oenothera missouriensis) has a hypanthium and style that is 6 inches or more long. This species is native to prairie-like areas called glades in Missouri; it is sometimes cultivated in gardens.
Photo by K. R. Robertson from plants in cultivation at the Case Estates, Arnold Arboretum of Harvard University.
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