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oak-marble gall

oak-marble gall A dark brown, hard, spherical gall on Quercus robur formed by the sexual generation of the gall wasp Andricus kollari. The galls contain members of the unisexual generation (all females) which emerge in spring to form ‘ant-pupae’ galls on the axillary buds of Quercus cerris (Turkey oak). The insect was introduced to Britain in 1830 for use in the dyeing and ink industry, the galls containing up to 17 per cent dry weight of tannic acid.

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"oak-marble gall." A Dictionary of Ecology. . Encyclopedia.com. 23 Aug. 2017 <http://www.encyclopedia.com>.

"oak-marble gall." A Dictionary of Ecology. . Encyclopedia.com. (August 23, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/oak-marble-gall

"oak-marble gall." A Dictionary of Ecology. . Retrieved August 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/oak-marble-gall

oak-marble gall

oak-marble gall A dark brown, hard, spherical gall on Quercus robur formed by the sexual generation of the gall wasp Andricus kollari. The galls contain members of the unisexual generation (all females) which emerge in spring to form ‘ant-pupae’ galls on the axillary buds of Quercus cerris (Turkey oak). The insect was introduced to Britain in 1830 for use in the dyeing and ink industry, the galls containing up to 17 per cent dry weight of tannic acid.

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"oak-marble gall." A Dictionary of Plant Sciences. . Encyclopedia.com. 23 Aug. 2017 <http://www.encyclopedia.com>.

"oak-marble gall." A Dictionary of Plant Sciences. . Encyclopedia.com. (August 23, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/oak-marble-gall-0

"oak-marble gall." A Dictionary of Plant Sciences. . Retrieved August 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/oak-marble-gall-0