 They have a single heart-shaped leaf and a thin flowering stem with pale coloured insect-like flowers.The lateral sepals and petals are similar in size and colour but the labellum is shelf-like and conspicuous with two prominent glands at its base.Orchids in the genus "Cyrtostylis" are terrestrial, perennial, deciduous, sympodial herbs, usually with a few inconspicuous, fine roots and one or two tubers.