Guide to Plant Galls in Britain
Margaret Redfern & Peter Shirley
Galls are growths caused by the action of other organisms. They are often bizarrely shaped and highly coloured. This fold-out introductory guide looks at common galls, like the red pimples found on sycamore and oak apples, and explains the life cycle of the organisms that cause them. It includes illustrations for 69 common galls.
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