About Corybas unguiculatus (R.Br.) Rchb.f.
Corybas unguiculatus (R.Br.) Rchb.f. is a terrestrial, perennial, deciduous herb that produces a single leaf. The leaf can be egg-shaped, heart-shaped, or round, measuring 5–30 mm long and 10–20 mm wide. It is greyish green on its upper surface and reddish on the lower surface. This orchid bears a single flower that ranges in color from reddish purple to reddish black. The flower leans downward, almost touching the ovary, and is 12–15 mm long. The flower stem is 10–20 mm long, with a bract around 5 mm long located just below the ovary. The dorsal sepal is spoon-shaped and bulbous, measuring 13–16 mm long and 10–12 mm wide, and it is smaller than the labellum. The lateral sepals are white, narrow and linear, 5–10 mm long; the petals have a similar shape to the lateral sepals but are only half their length. The labellum is approximately 15 mm long, entirely purple, and tube-shaped, with its opening pointing downwards and forwards, measuring around 6 mm wide. A few small teeth line the edge of the labellum. Flowering occurs between May and August. Corybas unguiculatus is a widespread, sometimes common species that grows in heath and heathy forest. Its distribution includes New South Wales south from Gosford, southern Victoria, the far south-east of South Australia, and Tasmania.
