Family, Duckweed. Flowers seldom seen. Leaves and whole plant very small, floating free on water without stems and true leaves, the latter being loosely cellular bodies, two or three together, dark green above, sometimes purplish beneath.
This family comprises our smallest flowering plants. The tiny growths cover the top of the water at the time of their vegetating, in spring and summer. Each flower consists of a single stamen or pistil, springing from the edge or upper surface of the plant. In nearly all our pools and ponds.