W. B. Grove's British Rust Funghi, first published by Cambridge University Press in 1913, had long been the standard work on the subject. But it had grown increasingly obsolete in the light of the intensive research devoted to the group. As early as 1938, Dr Wilson, who was reader in Mycology at Edinburg University, was encouraged to prepare a new edition. Since then it became clear that what was needed was not a revision but an entirely new book...