Abstract
A strain of Fusarium lateritium causing a unique disease, sweetpotato chlorotic leaf distortion, and producing microconidia borne on polyphialides is described. The polyphialides produced by this strain of F. lateritium are compared to those produced by F. proliferatum and F. subglutinans in section Liseola and F. scirpi in section Gibbosum. The polyphialides produced by the sweetpotato strain of F. lateritium most closely resemble those formed by F. scirpi in section Gibbosum.