A typical inflorescence may be one to two feet long, and several inches wide. They drape to one side. W ater lettuce is a floating plant. Experts disagree as to whether water lettuce is a native or has been introduced. Water lettuce occurs in lakes, rivers and canals, occasionally forming large dense mats.
Water lettuce has very thick leaves .
The leaves are light dull green, are hairy, and are ridged. There are no leaf stalks . Water lettuce roots are light-colored and feathery. Its flowers are inconspicuous. KB Polygonum species Knotweed K notweeds are emersed plants, and there are many species.