Senin, 21 Juni 2010

Oenothera Biennis Appearance

The common evening primrose is a biennial herbaceous plant. It forms a rosette lying on the floor with a fleshy taproot. The second year, rising from a flower-rich, grapey and glandular hairy branched inflorescence, of about one meter high, but often - in an ideal location - up to two meters high. This inflorescence takes about two to three centimeters long, intensive red flower stalk plates, which are m tall and sit in the axil of a bract. They are known in botany as hypogynous flowers, as the long, tubular flower pots sit-up cup, crown and stamens. Deep down in the narrow flower cup is the vierfächerige, inferior ovary. The four scars of several centimeters long stylus is the entrance to flower pollinating insects access.

The heyday of Commons Evening Primrose begins in early June and is in good location and weather conditions prevail until the end of September. The individual flowers are short-lived, however. They open only at dusk and are mostly up to the next noon again faded. The exact time to open the the flower is dependent on the sun, from the days of the temperature and humidity.

The opening of the flowers is often a matter of minutes in a flowing movement. The suddenness and speed with which made the flowering is observed in any other in Central occurring plant. It is therefore in botanic gardens and school gardens occasionally used a demonstration plant. A blooming flowers is usually still smell. It was only after the complete opening of the flowers their fragrance is intensely sweet, so that he sometimes felt by people as intrusive and almost offensive.


Source: http://de.wikipedia.org/wiki/Gemeine_Nachtkerze
See Also: sending flowers, online florist

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