X-ray of a common oak tree gall (Quercus sp.). These galls are sometimes called Oak-apples. A gall is an abnormal growth or swelling formed by a plant as a result of an attack by parasites such as bacteria,fungi,nematodes,insects or mites. This kind is caused by the larvae of parasitic wasps. Oak-apples are valued for the high-content of tannin within them | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Kinsman, Edward |
Taille de l’image : | 5635 px × 6348 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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