Cyperus conicus

Cyperus conicus is a sedge of the family Cyperaceae that is native to northern and north eastern parts of Australia. The perennial, rhizomatous and leafy sedge typically grows to a height of 0.2 to 1 metre (0.7 to 3.3 ft) in height and has a tufted habit. It blooms between March and July producing brown flowers. It is found in the Kimberley, Pilbara and northern Goldfields regions of Western Australia where it grows in sandy-clay and lateritic loamy soils. The range of the plant extends across the north eastwards through the Northern Territory and Queensland and then south into New South Wales....read more on Wikipedia.