There is just one species in this genus. True to its common name, flowering plants have no leaf. The 30cm stem rises straight out of the ground. Non flowering plants do, however, produce a small oval leaf. This orchid is one of the first orchids to flower each year, starting in late March. Plants flower earlier in the south than in the north.
Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Leafless Orchid habitat

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchids

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid

Praecoxanthus aphyllus - Leafless Orchid
This is the first test comment and just happens to be on the Leafless Orchid page.
The publication 'Perth Plants' by Russell Barrett & Eng Pin Tay does not list Praecoxanthus is this now Caladenia hirta?