Photo br ; j [E. Step, F.L.S. 
ROBIN’S PINCUSHION ON WILD ROSE. 
Owing to the irritation or stimulation caused by a Gall-wasp depositing her eggs in the Wild Rose, the tissues grow out in 
a form much like moss. Beneath this ‘‘moss”’ is a more solid core in which the Gall-wasp’s grubs feed. 
