''Pseudoperonospora'' is a genus of

water moulds The Oomycetes (), or Oomycota, form a distinct phylogeny, phylogenetic lineage of fungus-like eukaryotic microorganisms within the Stramenopiles. They are mycelia, filamentous and heterotrophic, and can reproduce both Sexual reproduction, sexuall ...

which includes several species known for causing

downy mildew Downy mildew refers to any of several types of oomycete microbes that are obligate parasites of plants. Downy mildews exclusively belong to the Peronosporaceae family. In commercial agriculture, they are a particular problem for growers of c ...

infections on plants. Species include: * '' Pseudoperonospora cannabina'' - causes downy mildew on

hemp Hemp, or industrial hemp, is a plant in the botanical class of ''Cannabis sativa'' cultivars grown specifically for industrial and consumable use. It can be used to make a wide range of products. Along with bamboo, hemp is among the fastest ...

* '' Pseudoperonospora cubensis'' - causes downy mildew on

cucurbits The Cucurbitaceae (), also called cucurbits or the gourd family, are a plant family consisting of about 965 species in 101 genera.

* '' Pseudoperonospora humuli'' - causes downy mildew on

hops Hops are the flowers (also called seed cones or strobiles) of the hop plant ''Humulus lupulus'', a member of the Cannabaceae family of flowering plants. They are used primarily as a bittering, flavouring, and stability agent in beer, to whic ...

References

Oomycete genera Water mould plant pathogens and diseases Peronosporales {{watermould-stub