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An oak apple on a tree in Worcestershire, England. An oak apple or oak gall is a large, round, vaguely apple-like gall commonly found on many species of oak. Oak apples range in size from 2 to 4 centimetres (1 to 2 in) in diameter and are caused by chemicals injected by the larva of certain kinds of gall wasp in the family Cynipidae. [1]
Biorhiza pallida, also known as the oak apple gall wasp, [1] is a gall wasp species in the family Cynipidae. This species is a member of the tribe Cynipini: the oak gall wasp tribe. Cynipini is the tribe partially responsible for the formation of galls known as oak apples on oak trees. These are formed after the wasp lays eggs inside the leaf ...
Restoration Day, more commonly known as Oak Apple Day or Royal Oak Day, was an English, Welsh and Irish public holiday, observed annually on 29 May, to commemorate the restoration of the Stuart monarchy in May 1660. [1] In some parts of England the day is still celebrated. It has also been known as Shick Shack Day, or Oak and Nettle Day. [2
Oaks support more than 950 species of caterpillar, many kinds of gall wasp which form distinctive galls, roundish woody lumps such as the oak apple, and a large number of pests and diseases. Oak leaves and acorns contain enough tannin to be toxic to cattle, but pigs are able to digest them safely. Oak timber is strong and hard, and has found ...
Datura quercifolia, commonly known as the oak-leaved thorn-apple, is a small shrub in the genus Datura that is native to Mexico and the Southwestern United States. It grows equally well in dry and moist soils and requires full sun. It contains a mix of alkaloids that are poisonous and can be potentially lethal when ingested.
Atrusca brevipennata, formerly Andricus pellucidus, also known as the little oak-apple gall wasp, is a locally common species of cynipid wasp that produces galls on oak trees in North America. [1] The wasp oviposits on shrub live oak and Gambel oak leaves. [ 1 ]
Andricus foecundatrix (formerly Andricus fecundator) is a parthenogenetic gall wasp which lays a single egg within a leaf bud, using its ovipositor, to produce a gall known as an oak artichoke gall, oak hop gall, larch-cone gall or hop strobile [1] [2] The gall develops as a chemically induced distortion of leaf axillary or terminal buds on pedunculate oak (Quercus robur) or sessile oak ...
Atrusca capronae, also known as the striped oak-apple gall wasp, is a fairly common species of cynipid wasp that produces galls on oak trees in North America. [1] The wasp oviposits on shrub live oak leaves. [1] The intensity of the stripe color may vary regionally. [1]