Rough Waterclover (Marsilea hirsuta)

Marsilea hirsuta is a carpet plant from Australia, usually delivered with leaves like a four-leaf clover. After a transitional period, it develops different types of leaves, possibly a low form with single leaves or alternatively two, three, or four-lobed leaves, varying in height from 2-10 cm, depending on the growth conditions. It forms runners and spreads rapidly around the aquarium.