Oncidium?

[Pitter]

Found at about 1100m in Colombia. What species might it be?

[PaphMadMan]

It is hard to see plant details here, and you don't say anything about the size, but if this is a small plant with a fan of leaves and flowers about 3cm across, it appears to be Psygmorchis cristagalli or perhaps another Psygmorchis species.

[Pitter]

Thank you that certainly looks to be it. Here is another image. I haven't found P. cristagalli listed for Valle Del Cauca but I've found two others P. pumilio and P. pusilla. However the flower certainly looks more more like P. cristagalli than those two.