Cyperus surinamensis

Cyperus surinamensis, also known as the tropical flatsedge, is a sedge of the family Cyperaceae that is native to the Americas.

Description
The annual or short-lived perennial sedge typically grows to a height of 0.35 to 0.8 m. It blooms between late spring and early fall producing reddish-brown flowers.

Distribution
The species is native to the south east of the United States of America, Mexico and parts of Central America. It is an alien species in Western Australia but is found in the Kimberley region.

Ecology
It grows in sunny areas with disturbed soil from sea level to an altitude of 200 m.