Century Dictionary and Cyclopedia
- n. A genus of plants, of the order Naiadaceæ, type of tribe Zannichellieæ. It is characterized by the absence of a perianth, by a single stamen, with slender fllament, and slightly curved carpels. The only species (by some considered as forming 9 species), Z. palustris, is a native of brackish ditches and salt water throughout the world. It is a submerged slender aquatic with a filiform creeping stem, the capillary branches becoming twisted into matted floating masses. The leaves are chiefly opposite, linear or filiform; the flowers are minute, at first terminal, but becoming axillary. See
horned pondweed, under pondweed.
- n. horned pondweed: completely submerged herbs; in some classifications included in Potamogetonaceae
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