Habitat: forest, clay banks, usually in moderate shade. Throughout.

Key features: pale, frilly edge to the dark crimson, tubular labellum and the thin, undulate to smooth edged red-veined leaf.

Habitat: deep litter and debris; often with C. trilobus or C. cheesemanii. Widespread.

Key features: white flower buried in the surface litter.

Habitat: damp, shaded forest, ofter high rainfall. Throughout.

Key features: thin, wavy sharp-pointed leaf and flower with long point to dorsal sepal parallelled by the thin sepals.

Habitat: dry or well drained places, high fertility; lowland to montane. Throughout.

Key features: dark widely flared labellum, flower hidden below leaf.