Sure seems like those orchid naming nuts slipped up on Laelia purpurata. I googled it, and the picture gallery had everything from all purple to all white, white and pink, and even a pale yellow with a pink lip, all named Laelia purpurata. Seems very inconsistent, given that the orchid authority is so strict about naming x this and x that.
Point here, maybe it's just an unstable cultivar? They're also calling it Sophronitis. I hate when they do that!
Jim, the picture of L.purpurata in my favorite book has it pale lilac with a reddish purple lip.