| Kingdom: Chromista | 
| Phylum: Oomycota | 
| Class: Oomycetes | 
| Order: Peronosporales | 
| Family: Pythiaceae | 
| Genus: Phytophthora | 
| Subject: Phytophthora ramorum S. Werres, A.W.A.M. de Cock | 
| Kingdom: Plantae | 
| Phylum: Magnoliophyta | 
| Class: Magnoliopsida | 
| Subclass: Dilleniidae | 
| Order: Theales | 
| Family: Theaceae | 
| Genus: Camellia | 
| Subject: Camellia japonica L. |