Caleana, commonly known as the Duck Orchid, is a genus of orchids from the Orchidoideae

Orchidoideae

The Orchidoideae, or the orchidoid orchids, are a subfamily of the orchid family .They typically contain the orchids with a single , fertile anther which is erect and basitonic....

 subfamily native to Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

. Species in this genus are called "duck orchids" because of the form of the labellum

Labellum

Labellum is the Latin diminutive of labium, meaning lip. These are anatomical terms used descriptively in biology, for example in Entomology and botany.-Botany:...

. The lip resembles a flying duck with clearly expressed beak. It is pollinated by the male sawfly

Sawfly

Sawfly is the common name for insects belonging to suborder Symphyta of the order Hymenoptera. Sawflies are distinguishable from most other Hymenoptera by the broad connection between the abdomen and the thorax, and by their caterpillar-like larvae...

 in similar way to the pollination of Drakaea

Drakaea

Drakaea is an endangered genus of orchid that is native to Australia. Orchids in this genus are commonly called "Hammer Orchids". The common name refers to the shape of the orchid, and the way it moves, resembling a hammer...

(the hammer Orchid). There are still problems with the classification of the Orchid in a subtribe.