A New Pathogenic Race of <i>Tilletia caries</i> Possessing the Broadest Virulence Spectrum of Existing Races

Fig. 1. Dark masses of Tilletia caries teliospores released from bunt balls (sori).



Image from Plant Health Progress article:
A New Pathogenic Race of Tilletia caries Possessing the Broadest Virulence Spectrum of Existing Races