| Althenia | |
|---|---|
| Althenia filiformis | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Monocots |
| Order: | Alismatales |
| Family: | Potamogetonaceae |
| Genus: | Althenia |
Althenia is a genus of aquatic plants of the family Potamogetonaceae. This has long been a group of two species in the Mediterranean Europe and South Africa, but is recently revised to include an Australasian relative, Lepilaena.