See text Ceratophyllum is a cosmopolitan genus of flowering plants commonly found in ponds, marshes, and quiet streams in tropical and in temperate regions.

Roots are completely absent and are missing even in the embryonic stage,[5] but sometimes they develop modified leaves with a rootlike appearance, which anchor the plant to the bottom.

[3][12][13][4] Amborellales Nymphaeales Austrobaileyales magnoliids Chloranthales monocots Ceratophyllales eudicots The subgeneric division of the genus Ceratophyllum into its appropriately recognized species, subspecies, and varieties is not settled.

This narrow interpretation lumps to the point of failing to give these potential species the taxonomic importance of even being named on a subspecific or varietal level.

Nonetheless, it still regards C. australe as a separate species due to significant morphological differences and its geographic isolation from the rest of C. tanaiticum.