Bulbophyllum coloratum

Bulbophyllum coloratum (colored bulbophyllum) is a species of orchid in the genus Bulbophyllum.  Found in New Guinea in the coastal plains under 500 meters in elevation.  It is a small sized leaf that blooms on a single flowered inflorescence. 

References

The Bulbophyllum-Checklist
The Internet Orchid Species Photo Encyclopedia

coloratum