SUMMARY
Hosts and distribution records are given for 39 species of smut fungi from Mexico, including some rarely collected species and new host records. Five new species are described: Sphacelotheca tepicensis on Sorghastrum incompletum, Thecaphora pulcherrima on Baltimora recta, Tilletia aegopogonis on Aegopogon tenellus, Tilletia durangensis on Eragrostis mexicana, and Ustilago bahuichivoensis on Pennisetum pringlei.