Bunochilus macrosepalus D.L.Jones Pterostylis macrosepala is a plant in the orchid family Orchidaceae and is endemic to the central-west slopes of New South Wales.

Non-flowering plants have a rosette of leaves flat on the ground, but those that are flowering have up to eight translucent green flowers with narrow, dark green stripes and up to ten stem leaves.

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

The description was published in Australian Orchid Research from a specimen collected in the Conimbla National Park.

[1] The specific epithet (macrosepala) is derived from the Ancient Greek word makros meaning "long"[5]: 494  and the Neo-Latin word sepalum meaning "sepal",[5]: 695  referring to the large fused sepals.