"Pondweeds and Bur-reeds and Their Relatives of British Columbia Aquatic Families of Monocotyledons". Lesser pondweed can be difficult to distinguish reliably from other fine-leaved pondweeds, especially "P. berchtoldii". Like most other broadleaved pondweeds, perfoliate pondweed is tetraploid, with 2n=52. They like to eat insects, cattails, sedges, rushes, pondweeds, grass, frogs, snails, and fish. Small pondweed is a fine-leaved pondweeds with a bushy habit. Shining pondweed is one of the so-called "Magnopotamion" group of pondweeds. Perfoliate pondweed is the commonest of the so-called "Magnopotamion" group of pondweeds. Various-leaved pondweed is one of the so-called "Magnopotamion" group of pondweeds. Common floating leaved macrophytes are water lilies (family Nymphaeaceae), pondweeds (family Potamogetonaceae). Like most other broad-leaved pondweeds, "Potamogeton lucens" is tetraploid, with 2n=52. Like most fine-leaved pondweeds, "Potamogeton pusillus" is diploid, with 2n=26. In deeper water, white water-lily and curled and broad-leaved pondweeds can be found.