Cymbopogon

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Cymbopogon, better known as lemongrass (UK: ; US: ), is a genus of Asian, African, Australian, and tropical island plants in the grass family.

Some species (particularly Cymbopogon citratus) are commonly cultivated as culinary and medicinal herbs because of their scent, resembling that of lemons (Citrus limon). Common names include lemon grass, lemongrass, barbed wire grass, silky heads, citronella grass, cha de Dartigalongue, fever grass, tanglad, hierba Luisa, or gavati chahapati, amongst many others.

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Uses

Lemongrass is widely used as a culinary herb in Asian cuisines and also as medicinal herb in India. It has a subtle citrus flavor and can be dried and powdered, or used fresh. It is commonly used in teas, soups, and curries. It is also suitable for use with poultry, fish, beef, and seafood. It is often used as a tea in African countries such as Togo, south eastern Ghana Volta Region and the Democratic Republic of the Congo and Latin American countries such as Mexico. Lemongrass oil is used as a pesticide and a preservative. Research shows that lemongrass oil has antifungal properties. Despite its ability to repel some insects, such as mosquitoes, its oil is commonly used as a "lure" to attract honey bees. "Lemongrass works conveniently as well as the pheromone created by the honeybee's Nasonov gland, also known as attractant pheromones. Because of this, lemongrass oil can be used as a lure when trapping swarms or attempting to draw the attention of hived bees."

Citronella grass (Cymbopogon nardus and Cymbopogon winterianus) grow to about 2 m (6.6 ft) and have magenta-colored base stems. These species are used for the production of citronella oil, which is used in soaps, as an insect repellent (especially mosquitoes) in insect sprays and candles, and in aromatherapy. The principal chemical constituents of citronella, geraniol and citronellol, are antiseptics, hence their use in household disinfectants and soaps. Besides oil production, citronella grass is also used for culinary purposes, as a flavoring.

Citronella is usually planted in home gardens to ward off insects such as whitefly adults. Its cultivation enables growing some vegetables (e.g. tomatoes and broccoli) without applying pesticides. Intercropping should include physical barriers, for citronella roots can take over the field.

Lemongrass oil, used as a pesticide and preservative, is put on the ancient palm-leaf manuscripts found in India as a preservative. It is used at the Oriental Research Institute Mysore, the French Institute of Pondicherry, the Association for the Preservation of the Saint Thomas Christian Heritage in Kerala, and many other manuscript collections in India. The oil also injects natural fluidity into the brittle palm leaves, and the hydrophobic nature of the oil keeps the manuscripts dry so the text is not lost to decay due to humidity.

East Indian lemon grass (Cymbopogon flexuosus), also called Cochin grass or Malabar grass, is native to Cambodia, Vietnam, Laos, India, Sri Lanka, Burma, and Thailand, while West Indian lemon grass (Cymbopogon citratus) is native to South Asia and maritime Southeast Asia. While both can be used interchangeably, C. citratus is more suitable for cooking. In India, C. citratus is used both as a medical herb and in perfumes. C. citratus is consumed as a tea for anxiety in Brazilian folk medicine, but a study in humans found no effect. The tea caused a recurrence of contact dermatitis in one case.

Lemon grass is also used as an addition to tea, and in preparations such as kadha, which is a traditional herbal brew used in Ayurvedic medicine.

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Images

Species

1. Cymbopogon ambiguus Australian lemon-scented grass - Australia, Timor
2. Cymbopogon annamensis - Yunnan, Laos, Vietnam, Thailand
3. Cymbopogon bhutanicus - Bhutan
4. Cymbopogon bombycinus silky oilgrass - Australia
5. Cymbopogon caesius - Sub-Saharan Africa, Indian Subcontinent, Yemen, Afghanistan, Madagascar, Comoros, Réunion
6. Cymbopogon calcicola - Thailand, Kedah
7. Cymbopogon calciphilus - Thailand
8. Cymbopogon cambogiensis - Thailand, Cambodia, Vietnam
9. Cymbopogon citratus lemon grass (Chinese: ???; pinyin: xi?ng máo c?o) - Sri Lanka, northeast and southern India, Southeast Asia
10. Cymbopogon clandestinus - Thailand, Myanmar, Andaman Islands
11. Cymbopogon coloratus - Madhya Pradesh, Tamil Nadu, Myanmar, Vietnam
12. Cymbopogon commutatus - Sahel, East Africa, Arabian Peninsula, Iraq, Iran, Afghanistan, India, Pakistan
13. Cymbopogon densiflorus - central + south-central Africa
14. Cymbopogon dependens - Australia
15. Cymbopogon dieterlenii - Lesotho, Namibia, South Africa
16. Cymbopogon distans - Gansu, Guizhou, Shaanxi, Sichuan, Tibet, Yunnan, Nepal, northern Pakistan, Jammu & Kashmir
17. Cymbopogon exsertus - Nepal, Assam
18. Cymbopogon flexuosus East Indian lemon grass - Indian Subcontinent, Indochina
19. Cymbopogon gidarba - Indian Subcontinent, Myanmar, Yunnan
20. Cymbopogon giganteus - Africa, Madagascar
21. Cymbopogon globosus - Maluku, New Guinea, Queensland
22. Cymbopogon goeringii - China incl Taiwan, Korea, Japan incl Ryukyu Islands, Vietnam
23. Cymbopogon gratus - Queensland
24. Cymbopogon jwarancusa - Socotra, Turkey, Middle East, Arabian Peninsula, Iraq, Iran, Afghanistan, Indian Subcontinent, Tibet, Sichuan, Yunnan, Vietnam
25. Cymbopogon khasianus - Yunnan, Guangxi, Assam, Bhutan, Bangladesh, Myanmar, Thailand
26. Cymbopogon liangshanensis - Sichuan
27. Cymbopogon mandalaiaensis - Myanmar
28. Cymbopogon marginatus - Cape Province of South Africa
29. Cymbopogon martini palmarosa - Indian Subcontinent, Myanmar, Vietnam
30. Cymbopogon mekongensis - China, Indochina
31. Cymbopogon microstachys Indian Subcontinent, Myanmar, Thailand, Yunnan
32. Cymbopogon microthecus - Nepal, Bhutan, Assam, West Bengal, Bangladesh
33. Cymbopogon minor - Yunnan
34. Cymbopogon minutiflorus - Sulawesi
35. Cymbopogon nardus citronella grass (In Thai language ????????? (ta-khrai hom) - Indian Subcontinent, Indochina, central + southern Africa, Madagascar, Seychelles
36. Cymbopogon nervatus - Myanmar, Thailand, central Africa
37. Cymbopogon obtectus Silky-heads - Australia
38. Cymbopogon osmastonii - India, Bangladesh
39. Cymbopogon pendulus - Yunnan, eastern Himalayas, Myanmar, Vietnam
40. Cymbopogon polyneuros - Tamil Nadu, Sri Lanka, Myanmar
41. Cymbopogon pospischilii - eastern + southern Africa, Oman, Yemen, Himalayas, Tibet, Yunnan
42. Cymbopogon procerus - Australia, New Guinea, Maluku, Lesser Sunda Islands, Sulawesi
43. Cymbopogon pruinosus - islands of Indian Ocean
44. Cymbopogon queenslandicus - Queensland
45. Cymbopogon quinhonensis - Vietnam
46. Cymbopogon rectus - Lesser Sunda Islands, Java
47. Cymbopogon refractus barbed wire grass - Australia incl Norfolk Island
48. Cymbopogon schoenanthus camel hay or camel grass - Sahara, Sahel, eastern Africa, Arabian Peninsular, Iran
49. Cymbopogon tortilis - China incl Taiwan, Ryukyu + Bonin Is, Philippines, Vietnam, Maluku
50. Cymbopogon tungmaiensis - Sichuan, Tibet, Yunnan
51. Cymbopogon winterianus citronella grass - Borneo, Java, Sumatra
52. Cymbopogon xichangensis - Sichuan

Formerly included

Numerous species now regarded as better suited to other genera including Andropogon, Exotheca, Hyparrhenia, Iseilema, Schizachyrium, and Themeda.

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References

Source of the article : Wikipedia