Established
| Common name (English) | |
|---|---|
| Platyobria biemani | |
| Pleistodontes imperialis | |
| Plexippus paykulli | Pantropical jumper |
| Plocamopherus ocellatus | |
| Plotosus lineatus | Barbel-eel catfish, striped eel catfish |
| Podarkeopsis capensis | |
| Polycirrus twisti | |
| Populus alba | |
| Populus nigra | |
| Portunus segnis | |
| Potamogeton perfoliatus | Clasped pondweed |
| Pratylenchus penetrans | |
| Prays citri | Citrus flower moth |
| Primula vulgaris | English primrose |
| Prionospio depauperata | |
| Prionospio paucipinnulata | |
| Procambarus clarkii | Red swamp crayfish |
| Protopulvinaria pyriformis | |
| Prunus avium | Cherry tree |
| Prunus domestica | Common plum |