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Rose

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A rose is a woody perennial flowering plant belonging to the genus Rosa. It is a member of the Rosaceae family.

Rose fields Vampula 1
Rose fields Vampula 1

These plants are highly diverse in their physical forms. Some species grow as trailing plants or erect shrubs. Others are climbers that can reach heights of up to 7 metres (23 ft).

A close-up of climbing roses
A close-up of climbing roses

There are over three hundred different species in nature. Humans have also created tens of thousands of cultivars, which are specific varieties bred for certain traits. These plants are famous for their showy flowers and often carry a lovely fragrance.

The anatomy of a rose is quite specialized. Most species have leaves that grow alternately along the stem. These leaves are typically 5 to 15 centimetres long and are pinnate, meaning they consist of several leaflets. These leaflets usually have serrated margins, which look like tiny saw teeth. While most roses are deciduous and lose their leaves, some species from Southeast Asia are evergreen.

Roseleaves3800px
Roseleaves3800px

The flowers themselves usually feature five petals, though species like Rosa omeiensis only have four. Beneath these petals sit five sepals. These green structures often appear as points alternating with the rounded petals.

Many people call the sharp growths on a rose stem "thorns." However, botanically speaking, these are actually prickles. Unlike true thorns, which are modified stems, prickles are outgrowths of the epidermis. The epidermis is the outer layer of tissue on the stem.

Rose Prickles
Rose Prickles

These prickles are often shaped like sickle hooks. This shape helps the plant cling to other vegetation as it climbs. In species like Rosa rugosa, the prickles are straight and very dense. This may protect the plant from being eaten by animals. It may also help trap wind-blown sand to protect the roots in coastal dunes.

Reproduction in roses often relies on insects for pollination. When an ovary is successfully fertilized, it develops into a fruit called a hip.

Rosa sulfurea 001
Rosa sulfurea 001

Most hips are red, but some species like Rosa pimpinellifolia produce dark purple or black hips. The hip is an aggregate fruit consisting of a fleshy outer layer called the hypanthium. Inside this layer, there are between 5 and 160 small, dry, single-seeded fruits called achenes. These achenes are embedded in a matrix of fine, stiff hairs. Birds such as thrushes and waxwings eat these hips and help disperse the seeds through their droppings.

The history of the rose is very long. The oldest rose remains were discovered in the Late Eocene Florissant Formation of Colorado. By the early Oligocene, roses were already present in Europe. Humans have cultivated roses for millennia. Evidence shows cultivation occurred as early as 500 BC in China, Persia, and Mediterranean countries. In the 19th century, Empress Josephine of France helped advance rose breeding at her gardens in Malmaison. Many modern garden roses actually trace their lineage back to 18th-century China. Today, the number of bred rose hybrids is estimated to be between 30,000 and 35,000.

Roses are used for much more than just decoration. They are a major source of commercial perfumes. To create rose oil, also known as attar of roses, producers use steam distillation. This process involves using steam to extract volatile essential oils from crushed petals. The resulting oil is a pale yellow or yellow-grey color. It takes a massive amount of flowers to make a small amount of oil. For example, about 2,000 flowers are needed to produce just one gram of oil.

Geraniol structure
Geraniol structure

This oil contains fragrant alcohols like geraniol and L-citronellol.

Beyond scent, roses have many culinary uses. Rose hips are exceptionally rich in vitamin C. They can be processed into jams, jellies, or syrups. Rose water is a common ingredient in many cultures. It is used in Middle Eastern, Persian, and South Asian sweets.

Gulaab Jamun (homemade!) bright
Gulaab Jamun (homemade!) bright

You might find it in treats like baklava, halva, or gulab jamun. Even the petals and young shoots are edible. They are often used to flavor teas or to create candied decorations for desserts. This wide range of uses shows how deeply the rose is connected to human culture and biology.

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🖼️ Images & Media (28)
File:Flag of Saint Lucia.svg
Flag of Saint Lucia.svg
File:Coat of arms of Saint Lucia.svg
Coat of arms of Saint Lucia.svg
File:Et-Viljandi coa.svg
Et-Viljandi coa.svg
File:Tudor Rose.svg
Tudor Rose.svg
File:Text document with red question mark.svg
Text document with red question mark.svg
File:The Roses of Heliogabalus.jpg
The Roses of Heliogabalus.jpg
File:Rose fields Vampula 1.jpg
Rose fields Vampula 1.jpg
File:A close-up of climbing roses.jpg
A close-up of climbing roses.jpg
File:Roseleaves3800px.JPG
Roseleaves3800px.JPG
File:Geraniol structure.png
Geraniol structure.png
File:Bouquet de roses roses.jpg
Bouquet de roses roses.jpg
File:Maria Amelia of Braganza.jpg
Maria Amelia of Braganza.jpg

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