to Hien, You are right, I heard v.huanglanae more red pouch too, this flower tell me, that message is not correct very much.
about emersonii and var, a compare for you, please link http://www.slippertalk.com/forum/showthread.php?p=39040#post39040 and click 200704 018.jpg
It is nice to see the Paph. emersonii from Vietnam.
It was described as a distinct species in a vietanmes journal as Paph. huonglaniae, but it is difficult to define the differences to the typical emersonii in his variability.