Abstract
Four new species of Alboleptonia are described from Puerto Rico and new distribution records for Alboleptonia are noted for Puerto Rico and St. John, U.S. Virgin Islands. Information from examination of the type collections of Alboleptonia aripoana, A. cyathiformis, and A. hyalodepas is discussed. Clarification of conflicting reports in the literature concerning the application of A. hyalodepas is presented and a lectotype is designated. Two new combinations are also made for Entoloma minutoalbum and E. talisporum. A key to the taxa of Alboleptonia occurring in and around the Caribbean region is also provided.