Damasonium minus

Damasonium minus is a species of flowering plant in the water-plantain family known by the common names starfruit and star-fruit (not to be confused with the cultivated starfruit). It is native to Australia, where it occurs everywhere except the Northern Territory. It is perhaps best known as an agricultural weed. It is a major weed of Australian rice crops. This species is an emergent aquatic plant. It is an annual or short-lived perennial herb growing up to a meter tall. The floating or emergent leaves have blades up to 10 centimeters long by 4 wide and lance-shaped to heart-shaped. They are borne on petioles up to 30 centimeters long. The branching inflorescence has whorls of flowers. Each flower has tiny green sepals and white or pink petals a few millimeters long. The star-shaped aggregate fruit is made up of follicles containing seeds. This plant grows in habitat with slow-moving and still water, such as swamps. In agriculture, this plant has been called "the most important broad......read more on Wikipedia.