Kathy, I am looking at my two small ones ( armeniaca and horichiana) - they may have had some small sized medium some time ago, at this point they are just small clumps of pseudobulbs clustered in and around a small plastic basket. The new one I picked up this Summer (Pterodactyl) is a large plant in a wooden basket and I don't see any medium either, just pbulbs and roots.
