& Schult.f., J.J.Roemer & J.A.Schultes Pontederia pauciflora Blume Pontederia vaginata Royle Monochoria vaginalis is a species of flowering plant in the water hyacinth family known by several common names, including heartshape false pickerelweed and oval-leafed pondweed.

It is native to much of Asia and across many of the Pacific Islands, and it is known in other areas as an introduced species.

[2] An aquatic plant, it is invasive in rice paddies and other water bodies.

This is an annual or perennial herb growing in water from a small rhizome.

The shiny green leaves are up to about 12 centimeters long and 10 wide and are borne on rigid, hollow petioles.