British Plant Galls by Margaret Redfern (Paperback)

AIDGAP identification guide to plant galls in Britain. Covers all gall causers, including insects, mites, fungi and nematodes Includes around 300 keys, alphabetical by host plant genus. Fully updated 3rd edition for 2023. Many naturalists recognise the commoner plant galls, like Oak Apples and Robin’s Pin Cushions. But there are many more. Some are tiny and require diligent searching. They occur on all parts of the plant: roots, stems, leaves, flowers, fruits and seeds. They appear as swellings and nodules, patches of hairs, dimples, blisters, discs and balls. Fortunately galls are often host-specific. Meanwhile many host plants have only a few known galls. So identifying the host plant can help narrow down the options considerably.