| nutgall | An excrescence on the oak, Quercus infectoria (family Fagaceae) and other species of Quercus, caused by the deposit of the ova of a fly, Cynips gallae tinctorae; an astringent and styptic, by virtue of the tannin it contains. Synonym: gall, galla, oak apple. (05 Mar 2000) |
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| nutgall |
an excrescence growing on oak trees (genus Quercus), especially Q. alba (the white oak), produced by insect eggs and larvae embedded in the plant tissues; it is a source of gallic and tannic acids, which are used in various pharmaceuticals for their astringent properties. Called also gall, Aleppo gall, Smyrna gall, and gallnut.
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