This species has a single, erect narrow leaf held high on the flowering stalk (scape). The scape is erect and unbranched and bears several to many shortly stalked flowers. The flowers are small and quite inconspicuous, with sepals and petals less than 2 mm long. The flowers are inverted (with the labellum above the centre of the flower, and facing downwards).

This species is very similar to Microtis species and Hydrorchis orbicularis, and differs from the former in lacking the dark swellings on the labellum, and from the latter in having a square-ish labellum. It also differs from Hydrorchis in being distinctly yellow-green.