Flower Wallpaper Tumblr Hd Black and White Widescreen Download for Mobile images designs: Orchid Flower Wallpaper

Monday 9 September 2013

Orchid Flower Wallpaper

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Source:- google.com.pk

Today we tell about the beauty and science of orchids, some of nature’s most interesting flowers.

Many people think of orchids as beautiful, sweet smelling, costly flowers that grow in hot tropical forests. But that is not the whole story of orchids. Some of the plants are found above the Arctic Circle. Some have an unpleasant smell. Not every species is lovely. And if you want to buy an orchid, it will cost a lot less than it once did.

Orchids are among the most common plant groups in the world. But some orchids that grow naturally are in danger of disappearing from Earth. At the same time, orchids produced in factories have become an important greenhouse crop.

Orchid industry sales are especially important to places like the Netherlands, Singapore, Taiwan and Thailand. People enjoy orchids as decorative plants and cut flowers.

Orchids come in all shapes, sizes, designs, colors and color combinations. The flowers may be tiny or large. But most have some common characteristics. The sepals of an orchid form the outside of the bud before the flower opens. There also are two regular petals. The third petal is the lip. Orchids share this structure with lilies and irises.

For reproduction, orchid flowers have male and female parts joined into one structure. The structure is called the column. The column is the most important quality that identifies the orchid family.

Not all orchids grow from the ground. Some are “air plants” that grow on trees. Unlike parasites, however, they do not rob the trees of nutrition.

Visitors are currently learning about orchids at the United States Botanic Garden in Washington, D.C. America’s plant museum and the Horticultural Services Division of the Smithsonian Institution are presenting the show “Orchids: A Cultural Odyssey.”

Among the many visitors, Tonya Johnson came to the exhibit with young children from the Shabach Christian Academy in Landover, Maryland. She helped the children make discoveries about orchids.

Live orchids form a rainbow of colors in the Botanic Garden’s conservatory building. Orchid plants are blooming out of pots, climbing on trees or overflowing from baskets among the garden’s permanent collection.

The world has an estimated twenty-five thousand kinds of orchids. A big blue globe near the opening of the exhibit shows places where orchids grow. The number of species in an area is written near its name.

For example, Costa Rica has one thousand five hundred species. The United States has seventy. The far northern nation of Greenland has four.

Signs and overhanging banners help tell the stories of the plants on exhibit. Some of the orchids look like insects – butterflies, bees or spiders. Others look like stars, cups or lighted fireworks.

A colorful figure of a dragon with big teeth attracts attention to information about orchids in Sri Lanka. Orchids play an important part in special events in that country and on that country’s money. One banner shows the flowers on Sri Lanka’s one-hundred rupee note. Another banner shows delicate orchids on a five-dollar note from Singapore.

Many visitors to the exhibit say they recognize some common orchid plants. The Cattleya, for example, gets a lot of attention.

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