The Yorkshire Naturalists' Union is an association of amateur and professional naturalists covering a wide range of aspects of natural history.
Its Mycological Committee, founded in 1892, is the oldest permanent organisation dedicated to the study of fungi in Great Britain.
The Yorkshire Naturalists' Union organises joint field trips, co-operates with the British Association for the Advancement of Science and other county-sized associations, and publishes a journal, The Naturalist.
[2] The journal was first published by the Yorkshire Naturalists' Union in August 1878.
[3] Media related to Yorkshire Naturalists' Union at Wikimedia Commons