Anacheilum radiatum (Encyclia radiata)
I've been too busy lately with our new house - the garden in particular is vast and needs a lot of work, more of which anon - for much photography, but here is one from the archive. It is just coming into flower again and seems very happy in its new "home" in the shade of a large Ficus. Nice scent though not as strong as some of the white Encyclias. Looking at this photo again it seemed very similar to the " Cockleshell Orchid", Encyclia cochleata. Upside down or non-resupinate flowers.