Nymphoides indica is
a perennial borne in a pond or marsh, its long and narrow stem
rooting in the mud on the bottom of the water, and the leaf,
orbicular-ovate, 7-20cm in diameter, floating on the water surface.
The flower bud emerges from an axil beneath the leaf and opens on
the water's surface; the white flower (corolla), measuring
approximately 1.5cm across, whose center portion is yellow, the
other part having long white hair. Bloom time: July-September.