16
Mar
2009
Oenothera biennis - Luminita
Flowers | Magnoliopsida

Scientific name - Oenothera biennis L.

Oenothera biennis was one of the first species introduced from USA to England and Europe in 1614.

Popular names - enotera, erba degli asses, evening Primrose, sundrops, onagre bisannuelle.

Distribution and Habitat - spontaneous arid places, along railways, on sandy soils, up to 1200 m altitude. Originally from North America and western Europe is naturalized.

Description - herbaceous biennial, in the first year form a rosette of leaves, in the second year forming a strain of 100-150 cm height, covered with glandular hairs, long and glossy. Basal leaves, gathered in rosettes, long petiole, lamina oblong-oval, leather, laced or wavy edge, leaf stems are alternate, short stalks or Sesi, lamina oblong-lanceolata e, the cuneata. Raceme blossom, flowers to subsoara bracteelor (similar but smaller leaves), calyx tubular, oval-lanceolata and 4 sepa recurbate outwards; Corola consisting of 4 petals yellow, 4 cm in diameter, pollination is done by night butterflies and bees. Blooms in June-October. Fruit capsule green, brown-brown at maturity; seminete children without dolls.

Tolerances - tolerate drought rocks and soils.

Requirements - exhibitions sunny, poor soil, well drained.

Propagation - by seeds. Seeds is sown in the greenhouse at temperatures of (18) - (20) ° C. Germination takes place after 4 weeks.

Natural partners and Garden - Achillea, Callirhoe, Geranium, Liatris, Nepeta, Verbena, Salvia, Yucca.

Properties and Uses - entire plant is edible.

Inflorescences have anti-inflammatory properties, antispasmodic, sedative. Be collected in June-July, the beginning of flowering before fruit formation. Thin layers dry in the shade, are preserved in paper bags or cotton.

Sontin 24% oil seeds.

The oil of Oenothera biennis L. is usedit to treat rheumatism, multiple sclerosis, alcolismului, schizophrenia, and premenstrual syndrome.

Recent studies have shown that oil of Oenothera biennis L. is valid in reducing blood pressure to normal, and lower blood cholesterol.

As anti-inflammatory emollient and a decoction is made of 6 g of dried flower in 100 ml of water. It compresses the stakeholders.

You shall not use preparations of Oenothera biennis L. during pregnancy and lactation, epilepsy.

In England and Germany, roots and stems are used in dishes from salads couples.

Rdacinile of Oenothera biennis L. is was used bys American Indian in treating obesity.

References

Barbara Ellis - Annuals - Houghton Mifflin Harcourt, 2000

Edzard Ernst, Max H. Pittler, Barbara Wider - The Desktop Guide to Complementary and Alternative Medicine - Mosby, 2006

France Royer, Richard Dickinson - Weeds of the Northern U.S. and Canada - The University of Alberta Press, 1999

Heather Boon, Michael Smith - The Complete Natural Medicine Guide to the 50 Most Common Medicinal Herbs - Robert Rose, 2004

James A. Duke - The Green Pharmacy Herbal Handbook - Roda Books, 2000

Peter Loewer - The Evening Garden - Timber Press, 2002

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