Orchid in my friends garden in Oz

[en3rmax]

Hi there OB,

My friend who brought me my first orchid a few years back and another for my birthday this year is living in Darwin Oz and she sent me some pics today that she thought i'd like. The orchids are growing on a tree in her garden i would like to know what they are? They look like a type of dendrobium am i right? but the flowers look a bit different.

Great pictures i love to be able to grow them like this :-)