NEW SPECIES AND RECORDS OF UREDINALES FROM THE NEOTROPICS

Four new species of rust fungi are described (Puccinia ibrae, Uredo cl avo, U. crusa, and U. tuitei) and five others are reduced to synonymy (Uredo macella, U. nigropuncta, U. panamensis, Uromyces cissampelidis, and U. rzedowskii). Among the 35 new host and geographic range extens ions are the first North American records of Aecidium opuntiae, P. dut hiae, P. mutisiae, P. puta, and U, occultus. Olivea petitiae, formerly known only from one Puerto Rican specimen, is now reported from 13 lo cations in six Caribbean nations. Uromyces sabineae, formerly known on ly from one Puerto Rican specimen, is now reported on four new host ta xa from five locations in three Caribbean nations. Spermogonia and ure dinoid aecia are described for the first time for Ravenelia pithecolob ii, and the first systemic aecia are reported for P. dietelii.