Synonyms
Didiplis linearis Raf.
Didiplis diandra f. aquatica (Koehne) Fassett
Didiplis diandra f. terrestris (Koehne) Fassett
Hypobrichia nuttallii Torr. & A.Gray
Peplis diandra f. terrestris Koehne
Peplis diandra f. aquatica Koehne
Ptilina aquatica Nutt.
Ammannia nuttallii A.Gray
Peplis diandra Nutt. ex DC.