Bushy growth
Small round leaves
Fresh green colour
 
Micranthemum umbrosum is native to most southeastern US states, from Texas to Florida and Virginia, where it grows in ponds, ditches and rivulets, in many areas it is emersed in summer and submersed in winter. It is also found in parts of Central and South America. 
The Shade mudflower may be known in the hobby for quite some time, but has gained popularity recently since aquaria that meet this plant's requirements have become more common.