The American Bryological and Lichenological Society is an organization devoted to the scientific study of all aspects of the biology of bryophytes and lichen-forming fungi and is one of the nation's oldest botanical organizations. It was originally known as the Sullivant Moss Society, named after William Starling Sullivant. The Society publishes a quarterly journal distributed worldwide, The Bryologist, which includes articles on all aspects of the biology of mosses, hornworts, liverworts and lichens. The Society also publishes the quarterly journal Evansia, which is intended for both amateurs and professionals in bryology and lichenology and is focused on North America.