Knopper gall on an oak tree by the A4104:: OS grid SO7840 :: Geograph Britain and Ireland

SO7840 : Knopper gall on an oak tree by the A4104

near to Little Malvern, Worcestershire, Great Britain

Knopper gall on an oak tree by the A4104

The knopper gall (Andricus quercuscalicis) is fairly new to Britain (1960s).
Gall wasps lay their eggs in growing acorns causing this distortion.
Link

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year taken

2012

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Grid Square: SO7840, 96 images (more nearby)
Photographer: Bob Embleton (find more nearby)
Image classification^?: Supplemental image
Date Taken: Sunday, 16 September, 2012 (more nearby)
Submitted: Sunday, 16 September, 2012
Geographical Context: Wild Animals, Plants and Mushrooms
Subject Location: OSGB36: SO 7816 4037 [10m precision]
WGS84: 52:3.6764N 2:19.1983W
Photographer Location: OSGB36: SO 7816 4037
View Direction: SOUTH (about 180 degrees)