''Peronospora farinosa'' f.sp. ''betae'' is a

forma specialis ''Forma specialis'' (plural: ''formae speciales''), abbreviated f. sp. (plural ff. spp.) without italics, is an informal taxonomic grouping allowed by the International Code of Nomenclature for algae, fungi, and plants, that is applied to a paras ...

of ''

Peronospora farinosa ''Peronospora farinosa'' is a species name that has been widely applied to downy mildew on leaves of wild and cultivated ''Amaranthaceae'': ''Amaranthus'', ''Atriplex'', ''Bassia'', ''Beta'', ''Chenopodium'', ''Halimione'', ''Salsola'', ''Spinaci ...

'', attacking

sugar beet A sugar beet is a plant whose root contains a high concentration of sucrose and which is grown commercially for sugar production. In plant breeding, it is known as the Altissima cultivar group of the common beet (''Beta vulgaris''). Together wi ...

References

External links

Index Fungorum

USDA ARS Fungal Database
{{DEFAULTSORT:Peronospora Farinosa F.Sp. Betae Water mould plant pathogens and diseases Food plant pathogens and diseases Peronosporales Forma specialis taxa