: a genus of mostly North American annual or biennial herbs (family Onagraceae) having usually nocturnal yellow flowers with erect buds and terete seeds in two rows in a capsule see evening primrose, kneiffia

Word History


New Latin, from Latin oenothera, onothera, a plant of the genus Epilobium, from Greek oinothēras, onothēras

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Cite this Entry

“Oenothera.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Oenothera. Accessed 19 May. 2024.

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