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Oenothera

Oenothera (evening primrose; family Onagraceae) A genus of flowering plants that have spirally arranged leaves and 4-petalled, large, usually yellow to orange flowers in a leafy spike. The seeds, unlike those of some other genera in the family, are not plumed. The unusual chromosome morphology and genetic mechanism of Oenothera have been the subject of much study by cytogeneticists. There are about 80 species, native to N. America, but some are much cultivated in gardens for the flowers, both as species and as hybrids, and are now well naturalized in Europe and elsewhere.

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"Oenothera." A Dictionary of Plant Sciences. . Encyclopedia.com. 17 Aug. 2017 <http://www.encyclopedia.com>.

"Oenothera." A Dictionary of Plant Sciences. . Encyclopedia.com. (August 17, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/oenothera

"Oenothera." A Dictionary of Plant Sciences. . Retrieved August 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/oenothera

Oenothera

Oenothera (ēnəthĬr´ə): see evening primrose.

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"Oenothera." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 17 Aug. 2017 <http://www.encyclopedia.com>.

"Oenothera." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (August 17, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/oenothera

"Oenothera." The Columbia Encyclopedia, 6th ed.. . Retrieved August 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/oenothera