The genus Laelia (L) has a few species in Mexico and parts of Central America. Is this a Laelia? Doesn't sound like it yet it is listed as a Laelia. OrchidSpecies.com cops out by listing it under Laelia, throwing in a SUBGENUS Crispae and SECTION Hadrolaelia between Genus and species. Hadrolaelia dayana is listed as a synonym.
Laelia dayana grows in Brazil near Rio de Janeiro in a fairly broad range or altitudes, 1500-6000 feet. It is cool to warm growing blooms in summer. It does well mounted and needs a dry winter rest.
I have had this plant just over a year. It came from Steve Christoffersen in a clay pot. I mounted it and it has grown quite a bit. The rollover plant picture was taken just after it was mounted. It had a dry winter and has been warm, wet and bright since mid-spring.