water_lobelia
1. [ noun ] (botany) erect perennial aquatic herb of Europe and North America having submerged spongy leaves and pendulous racemes of blue flowers above the water
Synonyms: Lobelia_dortmanna
Related terms: lobelia
Similar spelling:   water_level
  water_line
  water_lily
  water_wheel
  water_locust
  water_lettuce
  water_hole
  waterwheel
  water_lemon