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|Range of Acacia catechu|
Acacia catechu also commonly called Mimosa catechu, is a deciduous, thorny tree which grows up to 15 m (50 ft) in height. The plant is called khair  in Hindi, and kachu in Malay, hence the name was Latinized to "catechu" in Linnaean taxonomy, as the type-species from which the extracts cutch and catechu are derived. Common names for it include catechu, cachou, cutchtree, black cutch, and black catechu.
The tree's seeds are a good source of protein. Kattha (catechu), an extract of its heartwood, is used as an ingredient to give red color and typical flavor to paan. Paan, from the word pān in Hindi: पान, is an Indian and South East Asian tradition of chewing betel leaf (Piper betle) with areca nut and slaked lime paste.
A wood extract called catechu is used in traditional medicine for sore throats and diarrhea. The concentrated aqueous extract, known as khayer gum or cutch, is astringent. It is used in Ayurvedic medicine.
The tree can be propagated by planting its seeds, which are soaked in hot water first. After about six months in a nursery, the seedlings can be planted in the field.
- International Legume Database & Information Service (ILDIS)
- http://www.yourdictionary.com/catechu Derivation of word from Malay
- Quattrocchi, Umberto (2000). CRC World Dictionary of Plant Names. 1 A-C. CRC Press. p. 6. ISBN 978-0-8493-2675-2.
- World AgroForestry Database
- British Pharmacopoeia, Department of Health, British Pharmacopoeia Commission, London. The Stationary Office,(1999)
- FAO Appendix 1
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