James William Helenus Trail FRS FLS (4 March 1851 – 18 September 1919) was a 20th-century botanist who served as Professor of Botany at Aberdeen University from 1877 to 1919.
[2] Despite a strong love of natural history he was pushed to study medicine at Aberdeen University and graduated MB ChB around 1871.
[3] In 1876 he was appointed botanist to the colony of British Guiana but before he sailed he gained a superior position as Professor of Botany at Aberdeen University beginning in the autumn of 1877 in succession to Prof George Dickie.
A fine stained glass windows in St Machar's Cathedral is dedicated to his memory.
[7] In 1915, Georg Kenneth Sutherland published Trailia, which is a genus of fungi in the family Halosphaeriaceae and named in Trail's honour.