- Source: Caustis gigas
Caustis gigas, commonly known as giant twig-rush, is a sedge that is native to Western Australia.
The rhizomatous perennial sedge has a robust habit and typically grows to a height of 2 metres (6.6 ft). The plant blooms between April and May producing brown flowers.
It is found in the Wheatbelt region between Chittering and Coorow where it grows in sandy soils.
