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Rosemary

life science Maturity 5-7 Next article →

Rosemary, known scientifically as Salvia rosmarinus, is a fragrant and evergreen shrub.

RosemarySprig
RosemarySprig

It is a member of the Lamiaceae family, which is the mint family. This plant is native to the Mediterranean region, including Portugal and northwestern Spain. Rosemary is highly valued for its aromatic leaves and its ability to survive in tough conditions. It is often used in gardens for decoration or as a flavoring in food. Because it is hardy and drought-tolerant, it can grow in many different environments around the world.

The physical structure of rosemary allows it to thrive in specific habitats. It possesses a fibrous root system to anchor itself in the soil. The leaves are long and broad, appearing green on the upper surface. The undersides of the leaves are white and covered in dense, short, woolly hair.

Salvia rosmarinus MHNT.BOT.2023.13.45
Salvia rosmarinus MHNT.BOT.2023.13.45

The plant can grow in many forms, ranging from upright shrubs to trailing groundcovers. Upright varieties can reach significant heights, while trailing types like 'Prostratus' spread across the ground.

Rosmarinus officinalis prostratus
Rosmarinus officinalis prostratus

As the plant approaches senescence, or old age, around 30 to 35 years, it may release toxic chemicals into the soil. These chemicals inhibit the growth of other plants, creating bare patches of sand between the shrubs.

Rosemary displays a wide variety of flowers and growth patterns. In temperate climates, the plant typically flowers during the spring and summer. However, in warm climates, it may remain in constant bloom. The flowers can be white, pink, purple, or deep blue.

Rosemary Plant
Rosemary Plant

These flowers appear in groups of two to three along the branches. Rosemary is also known to flower outside its usual season, sometimes as early as mid-February or as late as early December in the Northern Hemisphere. Many different cultivars have been developed for specific looks, such as 'Albus' for white flowers or 'Blue Boy' for a dwarf size.

The history of rosemary's classification involves significant scientific changes. In 1753, Carl Linnaeus first described the plant as Rosmarinus officinalis. However, in 2017, researchers used molecular phylogenetic evidence to reclassify it. This evidence showed that rosemary belongs in the genus Salvia. This change revived a name originally published in 1835 by Fridolin Karl Leopold Spenner. Spenner had previously moved the species to Salvia, but he could not use 'Salvia officinalis' because that name was already taken. Therefore, he used the name Salvia rosmarinus as a replacement.

Rosmarinus officinalis MHNT.BOT.2008.1.19
Rosmarinus officinalis MHNT.BOT.2008.1.19

Rosemary has traveled across the globe through human history. It was naturalized in China as early as 220 CE during the late Han dynasty. It likely arrived in Britain around 43 CE when the Romans invaded. While there are no early records in Britain, the plant was mentioned in documents credited to Charlemagne. He ordered rosemary to be grown in monastic gardens and farms. Later, in 1338, cuttings were sent to Queen Philippa to be planted at the palace of Westminster. European settlers brought the plant to the Americas in the early 17th century, leading to its global distribution.

Today, rosemary is used extensively in culinary and industrial applications. The leaves are a staple in Mediterranean cuisine for flavoring stews, meats, and marinades.

Rosemary (রোজমেরী)
Rosemary (রোজমেরী)

Even the woody stems can be used as skewers for cooking. Beyond food, rosemary is a source of essential oil used in perfumes and shampoos.

RosemaryEssentialOil
RosemaryEssentialOil

This oil contains about 150 phytochemicals, including camphor, rosmarinic acid, and carnosol. The oil contains between 10% and 20% camphor. In the 14th century, one of Europe's first alcohol-based perfumes, Hungary water, was made from distilled rosemary.

Finally, rosemary holds deep symbolic meaning in various cultures. It has been used as a symbol of remembrance in many parts of the world. In the plays of William Shakespeare, the plant is frequently linked to memory and burial rites. In Australia, sprigs of rosemary are worn on ANZAC Day to signify remembrance for those who died in war. This connection is strengthened by the fact that rosemary grows wild on the Gallipoli Peninsula. From ancient Egyptian sacred rituals to modern culinary uses, rosemary remains a plant of great significance.

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🖼️ Images & Media (9)
File:RosemarySprig.jpg
RosemarySprig.jpg
File:Rosmarinus officinalis prostratus.jpg
Rosmarinus officinalis prostratus.jpg
File:Salvia rosmarinus MHNT.BOT.2023.13.45.jpg
Salvia rosmarinus MHNT.BOT.2023.13.45.jpg
File:Rosemary Plant.jpg
Rosemary Plant.jpg
File:Rosemary, ca 1500.jpg
Rosemary, ca 1500.jpg
File:Koeh-258.jpg
Koeh-258.jpg
File:Rosmarinus officinalis MHNT.BOT.2008.1.19.jpg
Rosmarinus officinalis MHNT.BOT.2008.1.19.jpg
File:Rosemary (রোজমেরী).JPG
Rosemary (রোজমেরী).JPG
File:RosemaryEssentialOil.png
RosemaryEssentialOil.png
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