Synonyms
Hydrophyllum virginianum f. simplicifolium Fernald
Hydrophyllum virginicum var. pacificum Eastw.
Hydrophyllum virginicum L.
Hydrophyllum virginianum var. patens (Britton) Brand
Hydrophyllum pinnatifidum Moench
Hydrophyllum patens Britton
Hydrophyllum spiraeifolium Salisb.