Water-meal is one of the duckweeds in the family Lemnaceae that contains some 38 species of the smallest and simplest flowering plants.

The plant itself averages 1/42” long and 1/85” wide or about the size of one candy sprinkle. It can weigh about 1/190,000 of an ounce, equivalent to two grains of table salt. If you tried to fill a thimble with them, it is estimated that you would need some 5000 plants!