303 Free Images of Oenothera Biennis

botanytaxonomy:binomial=oenothera biennisflower
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Oenothera biennis [as Oenothera grandiflora] Large, lemon-scented, yellow flowers open in the evening and close by noon the next day. A biennial, can grow up to 6 feet tall. A flora of North America, Barton, W.P.C., vol. 1 (1821)
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