Oenothera flava

Species of plant

Oenothera flava, the yellow evening primrose, is a species of flowering plant in the family Onagraceae. It is native to western Canada, the western and central United States, and Mexico, and it has been introduced to the former Czechoslovakia. An almost stemless perennial reaching 20 cm (8 in), it is typically found in damp situations such as prairie swales, open woodlands, and alongside streams.

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