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frog's-bit,common name for members of the Hydrocharitaceae, a family of aquatic herbs found in warm fresh- and saltwaters throughout the world. Most species grow partially or completely submerged, rarely floating. The family includes an eelgrass (genus Vallisneria), called also water celery and tape grass; the frog's-bit (Hydrocharis morsus-ramae); and the waterweeds (genus Elodea), often used in aquariums and in botanical experiments. Frog's-bit is classified in the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
..... Click the link for more information. , class Liliopsida, order Hydrocharitales.