Geum rivale with distorted flowers Coldingham Moor 29/06/2013

Geum rivale with distorted flowers Coldingham Moor 29/06/2013

Observation - Geum rivale with distorted flowers Coldingham Moor 29/06/2013. Description: Several plants had distorted flowers, would this be caused by a fungi infection, an insect or a virus, the second photo shows the typical flowers.

Several plants had distorted flowers, would this be caused by a fungi infection, an insect or a virus, the second photo shows the typical flowers.