AN UNUSUAL STRAIN OF FUSARIUM-LATERITIUM AFFECTING SWEET-POTATO

A strain of Fusarium lateritium causing a unique disease, sweetpotato chlorotic leaf distortion, and producing microconidia borne on polyphi alides is described. The polyphialides produced by this strain of F. l ateritium are compared to those produced by F. proliferatum and F. sub glutinans in section Liseola and F. scirpi in section Gibbosum. The po lyphialides produced by the sweetpotato strain of F. lateritium most c losely resemble those formed by F. scirpi in section Gibbosum.