Wolffia globosa is a species of flowering plant known by the common names Asian watermeal and duckweed.

It is native to Asia and is found in parts of the Americas and Africa, where it is an introduced species.

[2] It grows in mats on the surface of calm, freshwater bodies, such as ponds, lakes, and marshes.

In one human experiment, processed W. globosa was reported to provide dietary protein and vitamin B12.

[3] Wolffia globosa has been described as the world's smallest flowering plant, at 0.1–0.2 mm (0.004–0.008 in) in diameter.