AHha! I have all of your answers!!!!!
I purchased an invitro Black Orchid At the Belize Botanic Gardens gift shop in Cayo. It was in a little plastic vial and the plant itself grew from an agar nutrient base so there was no soil to harbor disease. It also came with certified papers stating that it was raised in a disease free environment. Now! Your not supposed to have any trouble getting these specimens past Agriculture inspectors and I didnt but that is all I will say about that!