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Noun1.watermeal - any of various aquatic plants of the genus Wolffia; throughout warmer regions of the world
duckweed - any small or minute aquatic plant of the family Lemnaceae that float on or near the surface of shallow ponds
genus Wolffia, Wolffia - minute rootless aquatic herbs having globular fronds floating on or near the water surface and bearing one flower per frond
common wolffia, Wolffia columbiana - smallest flowering plants known; of the Americas
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
It describes the roles of microscopic and macroscopic organisms that live in and around lagoons, including algae, archaea, bacteria, crustaceans, duckweed, aquatic and immature insects, grasses, rotifers, watermeal, weeds, worms, and burrowing animals, as well as the natural processes of wastewater treatment with algae, bacteria, and other organisms, and operational problems that can occur and their identification, prevention, and control.
It is Wolffia arrhiza, a species of flowering plant known by the common names spotless watermeal and rootless duckweed, belonging to the Araceae, a family rich in water-loving species.
He said "target species" include invasive milfoil, water lilies and algae in 95-acre Eddy Pond and fanwort, watermeal, bladderwort, duckweed, watershield and algae in 45-acre Pondville Pond.