Pink Primrose

Pink primrose is scientifically called Oenothera speciosa (speciosa stands for "showy"), beside of it has such alternative names as Pinklady and Showy evening primrose. This wildflower originates from the southeastern America and Mexico.

This perennial plant is capable to attain the length of 0,5  cm. It bears alternatively arranged leaves, having about 10 cm long and 4 cm wide. They vary by shape, ranging from linear to obovate, with toothed or wavy margins.

Pink primrose is remarkable by its solitary, 4-petal- blooms in the shape of a cup. These aromatic pinky blossoms are in flower from the summer into early fall. Actually they begin out in white, turning pink with the aging.

Their throats, stigmas and stamens come in a yellowish shade. Pink primrose blooms at the day and night hours, but usually in the pre-dawn time, as it closes during the full sun.

Evening primrose can be used in a vast array of semi-wild garden settings such as rock garden, wildflower meadow, borders and along the edges of roadsides and trails

source:http://www.types-of-flowers.org/pink-primrose.html 

Flowers

A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Magnoliophyta, also called angiosperms). The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs. Flowers may facilitate outcrossing (fusion of sperm and eggs from different individuals in a population) or allow selfing (fusion of sperm and egg from the same flower). Some flowers produce diaspores without fertilization (parthenocarpy). Flowers contain sporangia and are the site where gametophytes develop. Flowers give rise to fruit and seeds. Many flowers have evolved to be attractive to animals, so as to cause them to be vectors for the transfer of pollen.

In addition to facilitating the reproduction of flowering plants, flowers have long been admired and used by humans to beautify their environment, but also as objects of romance, ritual, religion, medicine and as a source of food.

source:http://en.wikipedia.org/wiki