| Regno | Plantae |
| Sottoregno | Tracheobionta |
| Superdivisione | Spermatophyta |
| Divisione | Magnoliophyta |
| Classe | Liliopsida |
| Ordine | Alismatales |
An order of monocots comprising aquatic and semi-aquatic plants, including the horticulturally important Araceae (aroids). It contains over 4,500 species distributed across humid tropical and subtropical wetland habitats.