gall

Lime leaf nail galls Lime Tilia europaea caused by the mite Eriophyes tiliae

Oak apple galls formed by Cynips quercusfollii gall wasps on twigs of the English Pendunculate or Common Oak Quercus robur

Knopper gall Andricus quercuscalicis and Oak apple gall Cynips quercusfollii on English Pendunculate or Common Oak Quercus robur

Blackthorn or Sloe Prunus spinosa, one sprig in blossom and the other bearing fruit

Blackthorn Prunus spinosa with a sprig showing spine, leaf and fruit and the other sprig showing blossom