Nymphaeales
Family: Cabombaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Brasenia holsatica | (Web.) Weberb. | Late Pleistocene | Europe | Extinct | Access |
Family: Hydatellaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
|
Hydatella dioica |
D.A.Cooke (1983 "1981") | - | (rediscovered) | Western Australia, Australia | Invalid (synonym) | Access |
| Hydatella leptogyne | Diels (1904) | Few-flowered hydatella | (rediscovered) | Drummond Nature Reserve, Western Australia, Australia | Invalid (synonym) | Access |
| Trithuria australis | (Diels) D.D.Sokoloff, Remizowa, T.D.Macfarl. & Rudall (2008) | (rediscovered) | Western Australia, Australia | Rediscovered | Access |
Family: Nymphaeaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Nymphaea thermarum | Eb.Fisch. (1988) | Pygmy Rwandan water lily | (rediscovered) | southwest Rwanda | Rediscovered in the Wild | Access |