Family: AponogetonaceaeDistribution:Tropical Asia and AustraliaCommon in ponds and ditches.Submerged aquatic herbs. tubers globose, Leaves 3-11x 1-2.5cm, linear oblong, base cordate, petioles 10-20cm long. Flowers 3-4mm across, pink/violet 4-5mm across, on dense spikes, peduncles 10-30cm long, Boiled tubers are eaten.Reference: Flora of presidency of Madras by J.S Gamble, ENVIS, Flora of Nellore district By B.Suryanarayana &A.S Rao