Diuris brumalis is a tuberous, perennial herb, usually growing to a height of 200–500 mm (8–20 in).

[2][3][4] Diuris brumalis was first described in 1991 by David Jones from a specimen collected near Kalamunda and the description was published in Australian Orchid Research.

[5] The specific epithet (brumalis) is a Latin word meaning "of the shortest day",[6] referring to the winter flowering of this species.

[7] The winter donkey orchid grows in shrubland and forest between Jurien Bay and Collie in the Avon Wheatbelt, Jarrah Forest and Swan Coastal Plain biogeographical regions of Western Australia.

[4] Diuris brumalis is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.