The Holy Thorn, Glastonbury, Somerset, flowering in Vickery’s Folk Flora: An A-Z of the folklore and uses of British and Irish plants, where it is also discussed at length. Roy Vickery, a former botanist at the Natural History Museum, gives for each entry not only botanical information, names, and history, but folk beliefs, traditional customs, use in folk medicine, legends, and other matters, in an 800-page hardback with more than 50 colour plates (Weidenfeld & Nicolson, £30 (£27); 978-1-4746-0462-8)
