Peronospora megasperma
- kingdom: Chromista
- phylum: Oomycota
- class: Peronosporea
- order: Peronosporales
- family: Peronosporaceae
- genus: Peronospora
- species: Peronospora megasperma
Auburn
Alabama- Cobden
Illinois- Starkville
Mississippi- Red Cloud
Nebraska
United States