Unknown, bay tree, Otago, New Zealand Minimize
June 2016. A curious symptom along the veins on the underside of bay leaves at Otago, New Zealand. What is it?

It was suggested that a few leaves are collected and taken to the nearest MAF office - placed in double plastic bags. The diagnostic lab is in Tamaki, Auckland.

Original:
https://groups.yahoo.com/neo/groups/pestnet/conversations/messages/12279
Replies:
https://groups.yahoo.com/neo/groups/pestnet/conversations/messages/12280