| Singular | Plural | |
|---|---|---|
| Nominativ | serpentigenas, serpentigena | serpentigenae |
| Genitiv | serpentigenae, serpentigenai | serpentigenarum, serpentigenum |
| Dativ | serpentigenae, serpentigenai | serpentigenis, serpentigenabus |
| Akkusativ | serpentigenam | serpentigenas |
| Ablativ | serpentigena, serpentigenad | serpentigenis, serpentigenabus |
| Vokativ | serpentigena | serpentigenae |