| Anton is correct it is an Epidendrum, more specifically a "reed-stemmed" Epidendrum. There are 2 kinds of Epis, one which has pseudobulbs and one which has long reed-like caines. This is the latter.
I think there is a good possibility that this is actually not a species, but rather an escaped hybrid that has naturalized itself. I say this because to my knowledge reed-stem Epis are not native to Australia. They come from South America.
For this reason, that it is probably an escaped hybrid and not a species, it will not be possible to ID it more specifically than that.
__________________  |