HYDROPHYTE

(1) A perennial vascular aquatic plant having its overwintering buds under water. (2) A plant growing in water or in soil too waterlogged for most plants to survive. (3) A plant adapted to grow in water. (4) Any plant growing only in water or very wet earth, requiring large quantities of water for growth. Also see Mesophyte, Phreatophyte, Xerophyte.