Check the listing for details. Wolffia sp. smallest flowering plant on earth, Floating, sustainable production. Color: Green, Condition: New. Listed at 1.39 USD. For sale are "Wolffia sp. smallest flowering plant on earth, Floating, sustainable production"***The body is only 1mm in diameter(the third picture), round to ovoid, floating on the surface or sinking at the bottom of the water with no roots.***Their size compared to duckweed is shown in the first picture.***Individual plantlets are hardly visible, but they can form a solid cover on the surface of the water(the second picture) and feel like sand.***They are also known as watermeal, dwarf duckweed or rootless duckweed, with 10 species, looks like Wolffia columbiana and need to be identified by botanist.***They can adapt to low light intensity such as LED tube for slow growing or strong sunlight for fastest growing rate.***They are suitable as a food for many plant-eating fish and can also be prepared as dried food.***They are fast growing and can survive in extreme temperatures as low as 32F or as high as 100F.***The quantity you will get is about 100 beads in a small container(the last picture) or other available container not shown in the picture.***Thanks for looking.