| Kingdom: | Plantae |
| Phylum: | Spermatophyta |
| Class: | Angiospermae |
| Subclass: | Monocotyledoneae |
| Superorder: | Alismatidae |
| Order: | Alismatales |
- Family
- Genus
- species – Common Name
- Alisma
- plantago – Water Plantain, Mad-dog Weed, Devilspoons, Great Thrumwort
- Sagittaria
- latifolia – Arrowhead, Swamp Potato, Wappato
- Triglochin
- maritima – Arrow Grass, Sourgrass, Goosegrass
Butomaceae
Hydrocharitaceae
- Vallisneria
- americana – American Eelgrass
Limnocharitaceae
- Hydrocleys
- nymphoides – Water Poppy
Alismataceae
