Marsilea quadrifolia

Water clover is a deciduous, aquatic fern, bearing 4 parted leaf resembling 4-leaf clover. Producing clumps of leaves up to 15 to 20 cm tall at intervals, creeping, much-branched rhizome. Leaves floating in deep water or erect in shallow water or on land.

Each stalk bearing a single shamrock-like leaf with four wedge-shaped leaflets. The plant forms dense stands or has a random growing pattern.Sporocarp ellipsoid, long, dark brown. The plant has been harvested from the wild for local use as a food and medicine. It is often cultivated as an ornamental in aquaria and garden ponds.