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Many people mistakenly thought Manjakani or Oak Galls is a plant or a tree, in fact Oak galls is not a plant but rather a result of a metamorphosis process. They are produced when the leaves of the oak tree (scientifically known as Quercus infectoria) are penetrated by stinging wasps, the spontaneous chemical reaction caused by the penetration stimulates the leaves to produce a roundish hard ball called an oak gall.
The oak galls used in commerce and medicine are excrescences on the Q. infectoria, a small oak, indigenous to Asia Minor and Persia, and result from the puncture of the bark of the young twigs by the female Gallwasp, Cynips Gallae-tinctoriae, who lays its eggs inside. Oak Gall is known as a natural astringent that contains antiseptic materials and
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