Tolumnia sylvestre ... compare to Alberto's T. hawksiana

I'm posting this as a comparison to Alberto's hawksiana. There are obvious similarities but the primary difference seems to be the crenulated lip in the sylvestre and a smooth margin on the hawksiana lip. The sylvestre plant is very similar to Alberto's hawksiana (small fans) although mine is significantly smaller. I have the sylvestre growing on stick, tree fern, and an old weathered cow bone. All are in bloom now and the one on the tree fern is the best.

 

I can't tell you anything about that particular clone but the species is a climber/scrambler. I give mine lots of light but not full sun. I have all of mine mounted without any moss on the roots. It seems to do well on most any mount but the one I have on a tree fern totem has the largest fans. Since mine are mounted without moss they get daily summer water and in the winter every 2-3 days. Yours appear to be bloom sized so hopefully you will see spikes forming by early summer. In the early stages the spikes and new growths are hard to tell apart.