Alexander Hanchett Smith (1904-1986) was an American mycologist well know for his taxonomic work on the agaricoid fungi. In 1934 he was appointed Assistant Curator of the University of Michigan Herbarium, later Director in 1959, and remained in the position until 1972. Smith mentored and worked with many of the leading mycologists of the time, focusing especially on macrofungi of the western United States, and produced numerous publications that included scientific papers, monographs, as well as many popular guide books. Presented here are taxa that were described by Alexander Smith (along with other authors in most cases), the majority of these being based on material from the United States .