''Caustis pentandra'', known as the thick twist rush is a widely distributed grass like plant found in many parts of

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

. It may grow to 2 metres tall, often seen in dry open forest, or moist heathland. Stems are a shiny pale green. The specific epithet ''pentandra'' is derived from the ancient Greek language, referring to five stamens.Les Robinson - Field Guide to the Native Plants of Sydney, page 283 This species first appeared in scientific literature in the year 1810, in the '' Prodromus Florae Novae Hollandiae'', authored by the prolific Scottish botanist Robert Brown.

References

pentandra Flora of New South Wales Flora of Victoria (Australia) Flora of Queensland Flora of Western Australia Flora of South Australia Flora of Tasmania Plants described in 1810 Taxa named by Robert Brown (botanist, born 1773) {{Cyperaceae-stub