tropical and warm regions of world
Species commonly cultivated
Ammannia gracilis Guill. & Perrottet (Africa)
A. latifolia L. (North America, Caribbean)
A. senegalensis Lam. (Africa)
Ammannia senegalensis is naturalized in Europe and India.
Not commonly known to be weedy. Ammannia senegalensis is recorded as weedy in rice fields. Ammannia auriculata is recorded as a weed of rice in the southwestern United States.
Cultivated either submersed and/or emersed. Submersed plants rarely branched. Requires high levels of light and nutrients for optimal growth. Ammannia senegalensis may be differentiated from A. gracilis by the downturned recurved leaves in the submersed form, although identifications may be problematic. Floral characteristics do not support this distinction of two separate species, and A. gracilis may simply represent a variety of A. senegalensis.