Powdery spores (conidia) of powdery mildew, caused by Leveillula taurica, produced in chains on stalks (conidiophores).

Conidiophores of Powdery Mildew (Leveillula taurica) on leaf, 15X Credit: Jack Kelly Clark
Powdery spores (conidia) of powdery mildew, caused by Leveillula taurica, produced in chains on stalks (conidiophores). Credit: Jack Kelly Clark