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(Plants) any plant of the large taxonomically complicated American genus Oenothera, typically having yellow flowers that open in the evening: family Onagraceae. See evening primrose
[C20: from Greek oinothēras, ?from onothēras a plant whose roots smell of wine]
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|Noun||1.||Oenothera - chiefly North American herbs with usually nocturnal flowers|
dicot genus, magnoliopsid genus - genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination
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