BioImages: The Virtual Field-Guide (UK)
Agrobacterium tumefaciens (Crown Gall - causative organism)
||19 April 2007
|OS grid ref:
||51° 30' N, 1° 10' W
||Vice County: Berks, VC22, England
||galled Sallow branches and trunk
||on live, galled branch of Salix caprea
||Galls on small branches, cankers on major ones.
An old gall, found on a fallen twig next to the Phytoplasma gall that is so common on Salix. Dry-corky texture, with internal tunnels. Similar tunnel running down the centre of twig which connected with the scar around the galls and probably both galls - possibly an old Saperda populnea stem mine.
Need to revisit and collect some fresh material.