
thumb|right|Lepilaena australis Harv., 1855 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 in 2016 was revised to include an Australasian relative, Lepilaena. The genus is named after the agronomist Jean Althen.
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thumb|right|Lepilaena australis Harv., 1855 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 in 2016 was revised to include an Australasian relative, Lepilaena. The genus is named after the agronomist Jean Althen.
== Description == This genus is made up of aquatic herbs. The bristle-like leaves are clustered at the nodes. The wider bases produce broad ligules.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).