Cattleya walkeriana fma.albescens 'White Face' (Tokyo No.1 x Puanani)

C.walkeriana fma.albescens 'White Face' (Tokyo No.1 x Puanani), a photo by ken558456 on Flickr.

Note that this grower appears to have the plant in potting mix. What is more likely is that there is a layer of styrofoam peanuts (or something similar) and only a thin layer of potting soil (or something similar) over it. Just guessing...