Wow, that is a tough one - all I could find is that it is "Ada x Odontoglossum x Oncidium" and no pictures. I believe the Ada is Adacidium and I found a picture of that in
Spanish Wikipedia (I love Wikipedia). Not sure tho, because I've also seen Adacidium as Adcm or Adcm Ada. The Odontoglossum & Oncidium are easy to find pictures of.
Ops, have to edit myself here. Came across this page
Orchid Genera and Abbreviations and all it says about 'Ada' is Natural Genus - so I have no idea what the ada means!
Better leave it to the experts.
Hope that helps.
Kath-