| Kingdom: Chromista |
| Phylum: Oomycota |
| Class: Oomycetes |
| Order: Peronosporales |
| Family: Pythiaceae |
| Genus: Phytophthora |
| Subject: Phytophthora sojae Kaufm. & Gerd. |
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Rosidae |
| Order: Fabales |
| Family: Fabaceae |
| Genus: Glycine |
| Subject: Glycine max (L.) Merr. |