It has two broad leaves and a single green or reddish pink flower with a shiny black insect-like callus covering two-thirds of the base of the labellum but with the tip of the labellum free of callus.

There is a shiny black, insect-like callus 1.8 mm (0.07 in) long, occupying two-thirds of its base.

The column is pale green with dark purple spots and flecks, 6.5–7.5 mm (0.26–0.30 in) long, about 2 mm (0.08 in) wide with narrow wings.

[2][3][4][5] Chiloglottis seminuda was first formally described in 1991 by David Jones from a specimen collected near Penrose and the description was published in Australian Orchid Research.

[6] The specific epithet (seminuda) is derived from the Latin prefix semi- meaning "a half"[7]: 695  and nuda meaning "bare" or "naked",[7]: 123  referring to the bare one-third of the tip of the labellum.