Pterostylis sanguinea, is a terrestrial, perennial, deciduous, herb with an underground tuber.

[2][4][3][5] Pterostylis sanguinea was first formally described in 1989 by Mark Clements and the description was published in Australian Orchid Research from a specimen collected in Belair Recreation Reserve (now Belair National Park) in South Australia.

[1] The specific epithet (sanguinea) is a Latin word meaning "bloody" or "blood-red"[6] referring to the sometimes blood red colour of the flowers of this species.

[3] Pterostylis sanguinea occurs in Western Australia from north of Kalbarri in the north to Toolinna Cove in the east, in the south-east of South Australia and in disjunct areas of Victoria, west from Yarram.

[2][4][3][5][7][8] Pterostylis sanguinea is classified as "not threatened" by the Government of Western Australia Department of Parks and Wildlife.