Conostylis seminuda is a rhizomatous, tufted perennial, grass-like plant or herb in the family Haemodoraceae and is endemic to a small area in the south-west of Western Australia.

Conostylis seminuda is a rhizomatous, tufted, perennial grass-like plant or herb that typically grows to a height of 30 cm (12 in).

[2][3][4] Conostylis seminuda was first formally described in 1987 by Stephen Hopper in the Flora of Australia, from specimens he collected 4 km (2.5 mi) west of the Brand Highway, east of Jurien Bay in 1982.

[6] This conostylis grows in sand in low heath in a small area between Mount Lesueur and Alexander Morrison National Park in the Geraldton Sandplains and Swan Coastal Plain bioregions of south-western Western Australia.

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