Oncidium 'Sharry Baby'
The Oncidiums are a wonderfully easy to grow group of orchids. They are often called "Dancing Ladies" due to the fact that their spray of flowers look to be dancing in the wind. The majority of these varieties grow on trees in nature and thus you can grow these plants mounted on wood, mounted on a tree, or potted. They do well regardless how you grow them.
This is a mahogany/white Dancing Lady.