Oh I'm so glad you posted about this orchid & concertinas. I think I may be seeing those on my oncidium. I had cut back in watering since it is in sphag & I had read they liked to be a bit dry. The pseudo bulbs look nice & plump though. I'll try to snap a pic. I also need to look up my pics of the flowers, because I think they look a lot like the
Flowers on this one.
Edit: flower is similar. It was a clearance orchid from the Christmas shipment & only one flower was nice enough to snap a pic of, but the pic isn't very good.
Sorry to hijack your thread. I actually like the flowers on your wilsonara better.
I was considering moving this guy into Semi hydroponics.