The orchids from genus Pecteilis consists of 10 or so Asian terrestrial species which shows seasonal dormancy. P.susannae is a widespread plant found from eastern India all the way down to Borneo and Sulawesi. It has a longish tuber which needs cool dry resting period to initiate flowering. Growers in Singapore achieved this by placing them in air-con room or fridge over the period of 4-5 months or so.
I saw this spectacular flowering plant at a local nursery, leftover from a recent garden exhibition. It was priced to clear and so tempting to take it home, but I had low success rate with this type of temperate things and would likely create a fuss over it, only to witness its slow demise. Its best, for both of us, to just say hi and move on.