Rev. Eyre had a long-standing interest in natural history. He was a member of the Hampshire Field Club and took an interest in local plants, especially species of the genus Rubus, and in land and freshwater molluscs. His botanical and conchological collections were eventually left to Haslemere MuseuminSurrey, where they remain today.[1] He also joined the Woolhope Club, as a result of which he developed an expertise in fungi. In 1896 he became a founder member of the British Mycological Society and was elected its president in 1903, when he gave an address on "mycology as an instrument of recreation". Eyre was also a fellow of the Royal Meteorological Society, keeping local weather records, and undertook research into local history, publishing an account of his parish.[2][3]
His collections of new and interesting fungal species, mostly made in the Swarraton area, were for the most part passed on to and described by contemporary mycologists at the Royal Botanic Gardens, Kew, namely M.C. Cooke, George Massee, and E.M. Wakefield. Eyre published few papers himself (mainly a series on Hampshire fungi for the local Field Club), His collections of fungi are now in the mycological herbarium at the Royal Botanic Gardens, Kew.
Eyre named and described the agaric now known as Lepiota grangei (Eyre) Kühner, 1934. He named this species after Grange Park in Northington.
A number of species were named in Eyre's honor, including Melanophyllum eyrei (Massee) Singer, Basidiodendron eyrei (Wakef.) Luck-Allen, and Poria eyrei Bres.[4]
Media related to William Leigh Williamson Eyre at Wikimedia Commons
