Pterostylis excelsa, commonly known as the tall rustyhood,[3] or dry land green-hood[4] is a flowering plant in the orchid family Orchidaceae and is endemic to South Australia.

The lateral sepals turn downwards, are about the same width as the galea and suddenly taper to narrow tips 20–25 mm (0.8–1 in) long.

[3][4] Pterostylis excelsa was first formally described in 1986 by Mark Clements from a specimen grown in the Australian National Botanic Gardens from a tuber collected from the Eyre Peninsula.

[6] The tall rustyhood is widespread and locally common in the south-east of South Australia, sometimes growing in large colonies.

It grows in scrubland and mallee, sometimes on rock outcrops in areas receiving an average annual rainfall of 200–500 mm (8–20 in).