Ammania rotundifolia Hamilton Ammania latifolia Wallich pro parte Ammania subspicata Bentham Ameletia rotundifolias Dalzell ex Gibson Ameletias subspicata Bentham Rotala rotundifolia, the dwarf rotala,[1] is a plant species often confused with Rotala indica.

It is a common weed in rice paddies and wet places in India, China, Taiwan, Thailand, Laos, and Vietnam, and has been introduced to the United States.

This plant can be differentiated from the closely related R. indica by the differences in the two species' inflorescences.

R. rotundifolia bears groups of terminal inflorescence, while R. indica has solitary flowers on the axis of the leaves.

[citation needed] A common aquarium plant, it is undemanding, but requires light to thrive.