pistia stratiotes or pistia or water cabbage or water lettuce or shellflower.

africa aqua aquatic biodiversity biology botanic botanical botany buoyancy cabbage canal cute decorate decoration ecology fertilizer float florida foliage form fresh garden green hair leaf leaves lettuce monocotyledon natural nature nile ornamental outdoor park pattern perennial pistia plant pond river rosette sewage shellflower soft stratiotes submersed subtropical surface tropical vein water waterway wavy weed weedy