| Kingdom: Chromista |
| Phylum: Oomycota |
| Class: Oomycetes |
| Order: Peronosporales |
| Family: Pythiaceae |
| Genus: Pythium |
| Subject: Pythium spp. Pringsh. |
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Rosidae |
| Order: Euphorbiales |
| Family: Euphorbiaceae |
| Genus: Euphorbia |
| Subject: Euphorbia pulcherrima Willd. ex Klotzsch |