Australian and New Zealand Gardening: Orchid identification please., 0 by WayneCarter

WayneCarter wrote:
I am hoping someone might be able to identify this orchid. This came as a gift from an elderly lady who tells me it is an Australian orchid from warm temperate east coast.

Presently the orchid is growing on an old piece of branch perched on top of a terracotta pot filled with free draining orchid mix. My thought was that roots developing over the old branch would enter the orchid mix and secure the plant to the terracotta pot.

I would greatly appreciate any assistance in identification of this plant. Thank you.