Marsilea crenata is a species of fern found in Southeast Asia. It is an aquatic plant looking like a four leaf clover. Leaves floating in deep water or erect in shallow water or on land. Leaflets glaucous, sporocarp ellipsoid, on stalks attached to base of petioles. Uses The leaves of Marsilea crenata are part of the East Javanese cuisine of Indonesia, especially in the city of Surabaya where they are served with sweet potato and Pecel spicy peanut sauce. These leaves are also part of the Isan cuisine of Thailand, where they are known as Phak waen and eaten raw with Nam phrik chilli dip. See also Javanese cuisine List of Thai ingredients References External links Thai Food PLANTS Profile for Marsilea crenata - USDA PLANTS Asian vegetables crenata Flora of Asia Aquatic plants Thai cuisine Javanese cuisine