Dendrobium wallisii
Blooming size plants mounted on fern bark available for sale at $50 each. 
The plants have 5-6 growths each. 
Only 3 plants available. 

This Dendrobium species native to Australia is quite uncommon and difficult to come by. The plants have leaves that resembles green beans, and white flowers that are slightly curly. The plants usually form 20-30 flowers on each inflorescence. 

Dendrobium wallisii