Pseudoperonospora

Pseudoperonospora is a genus of water moulds which includes several species known for causing downy mildew infections on plants.

Species include:
 * Pseudoperonospora cannabina - causes downy mildew on hemp
 * Pseudoperonospora cubensis - causes downy mildew on cucurbits
 * Pseudoperonospora humuli - causes downy mildew on hops