Conostylis setosa, commonly known as white cottonhead,[2] is a rhizomatous, tufted perennial, grass-like plant or herb in the family Haemodoraceae and is endemic to the south-west of Western Australia.

It has flat leaves and white, or pinkish maroon to purple flowers Conostylis setosa is a rhizomatous, perennial grass-like plant or herb that has small tufts and short stems.

[2][3][4] Conostylis setosa was first formally described in 1840 by John Lindley in his A Sketch of the Vegetation of the Swan River Colony.

[7] White cottonhead is locally common between Bindoon and Dwellingup on the Darling Scarp, in the Jarrah Forest and Swan Coastal Plain bioregions in the south-west of Western Australia.

[2][3] Conostylis setosa is listed as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions.