The flowers are pretty big, phearamedusa. 11 cm in diameter. And is quite tall. Around 35 cm. But the color in the photo is not right... it is a little bit yellow, not white. I can't be sure of the name, pheli...
I don't have much hope for the flowers to last: they traveled in cold conditions. But I'll wait for another bloom...
Nico, your plant is very like that of Blc. Hsinying Catherine. Yours looks like a seedling and bloomed for the first times so it's somwhat different from the mature plant.
The basal color of Blc. Hsinying Catherine is slightly yellow because of one of its parent, Blc. Love Sound.