evening primrose

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evening primrose

n.
Any of various plants of the family Onagraceae and especially the genus Oenothera of the Americas, having four-petaled usually yellow flowers that open in the evening and whose seeds yield an oil used in herbal medicine.

evening primrose

Herbal medicine
A biennial herb that contains essential fatty acids, including gamma linoleic acid; it is has been widely used for heart disease, hypercholesterolaemia, premenstrual syndrome, endometriosis, breast pain, menopause, eczema, psoriasis, acne, osteoporosis, multiple sclerosis, cancer, Alzheimer's disease, asthma, diabetes, hyperactivity and gastrointestinal disorders.

There are no peer-reviewed studies to support the efficacy of evening primrose.

Toxic effects
Headaches, nausea, seizures, skin rashes.
References in periodicals archive ?
Novel biological properties of Oenothera paradoxa defatted seed extracts: Effects on metallopeptidase activity.
Oenothera biennis was among theearliest plant models in genetics and cytogenetic and it played an important role in the modern synthesis of evolutionarybiology.
Four-winged fruits are characteristic of Pedaliaceae, Melianthus, Oenothera, Petersianthus, Hymenopyramis, several apiaceous genera, and some Combretaceae.
Our evidences showed that under a wooded canopy, reduced light flux displaced most of the original shade intolerant native plants like Achryrocline satureoides, Margyricarpus pinnatus, Solidago chilensis, Oenothera mollissima and Panicum racemosum.
One which returns underground to sleep through winter is Oenothera speciosa 'Pink Petticoats'.
If you are more concerned with fragrance, then include Nicotiana sylvestris, a tobacco plant variety growing up to 150cm (5ft), whose white flowers emit an intense scent, Oenothera fruticosa Fyrverkeri, an evening primrose which produces sweetly scented blossoms of soft white, pink and bright yellow, and night gladiolus, whose creamy yellow flowers give an intense, spicy smell at night.
If you are more concerned with fragrance, then include Nicotiana sylvestris, a tobacco plant variety growing up to 150cm (5ft), whose white flowers emit an intense scent, Oenothera fruticosa 'Fyrverkeri', an evening primrose which produces sweetly scented blossoms of soft white, pink and bright yellow, and night gladiolus, whose creamy yellow flowers give an intense, spicy smell at night.
For example, nectar of an evening primrose, Oenothera primiveris, smells sharp and pungent, he says.
El aceite primaveral de la tarde u Oenothera biennis, extraido de una flor salvaje de color amarillo que se encuentra en Norteamerica, Europa y partes de Asia y que se transforma en el organismo a acido gamma linolenico.
Sundrop 4 b f Sunday Silence - Oenothera She'll be running in all those nice fillies races that they have put on such as the P retty Polly at The Curragh.
Bred in Japan, Sundrop is a daughter of the useful 10-furlong winner Oenothera and connections are unfazed by the leap in class and Frankie Dettori will ride.