Ruppia, also known as the widgeonweeds, ditch grasses or widgeon grass, is the only extant genus in the family Ruppiaceae, with eight known species. These are aquatic plants widespread over much of the world.
The Ruppia genus, commonly called widgeonweeds, ditch grasses, or widgeon grass, is the sole surviving genus within the Ruppiaceae family. It comprises eight recognized species and thrives in various aquatic environments worldwide.