The personal herbarium and library of William Gilson Farlow (1844-1919), eminent mycologist and phycologist and first Professor of Cryptogamic Botany in North America, bequeathed to Harvard in 1919, form the nucleus of the Farlow Herbarium and Reference Library. Further bequests from Roland Thaxter (1858-1932), as well as specimens, manuscripts, correspondence, illustrations and field notes from other notable researchers, including E. B. Bartram, E. A. Burt, W. H. Weston Jr., D. H. Linder, and I. M. Lamb, have further enhanced the collections. The Farlow Herbarium currently houses approximately 1,400,000 specimens, including approximately 75,000 types, of lichenized and non-lichenized fungi, bryophytes, diatoms and algae.