Biographies & obituaries. Ramsbottom, J. (1919). James William Helenus Trail (1851-1919). Transactions of the British Mycological Society 6 (3): 297-298. Ainsworth, G.C. (1996). Brief Biographies of British Mycologists p. 173. Collections. ABD. Lists. Publications. Taxa. Kirk & Ansell form of name: Trail.