The pond water-crowfoot (Ranunculus peltatus) belongs to Ranunculaceae (the Buttercup family). It is an annual or perennial herb that is native to Europe, southwestern Asia and northern Africa. This herb grows in slow streams, ponds, or lake. It has two different leaf types, broad rounded floating leaves 3-5 cm in diameter with 3-7 shallow lobes, and finely divided thread-like submerged leaves. The flowers are white with a yellow centre, 15-20 mm in diameter, with five petals, and bllom from April to September. After flowering, it produces achenes about 1-2 mm in diameter.