BioImages: The Virtual Field-Guide (UK)

Rhizobium radiobacter (Beijerinck & van Delden, 1902) (Crown Gall - causative organism)

Date 19 April 2007
OS grid ref SU67
Lat/Lon 51° 30' N, 1° 10' W
Location Vice County: Berks, VC22, England
Record Summary galled Sallow branches and trunk
Associated organism: on live, galled branch of Salix caprea
Identification Notes: 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.


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