Tailed helmet orchid

This deciduous terrestrial orchid grows in coastal heath where it is often locally common and occurs in large groups.

The leaf grows to about 20 mm diameter and grows just above the ground. The 12 mm flower occurs on a short stem and is greyish and dark maroon. The labellum has tiny marginal teeth with a round central raised area which is white with a pale purplish centre. The labellum is covered in bristles and the labellum has a distinctive tail like tip.

Corybas undulatus is similar to Corybas fimbriatus and Corybas hispidus but can be easily be differentiated by the tail like tip to the labellum.