This is a pretty standard run-of-the mill oncidium orchid.    From Wordnik.com.  [12/09/2005] Reference

They're both oncidium type orchids, grow long spikes with lots of flowers.    From Wordnik.com.  [02/23/2007] Reference

This is an enormous oncidium at a local orchid greenhouse in Virgnia - Al's Orchid Exchange.    From Wordnik.com.  [06/08/2007] Reference

The day the first family moved into 1600 Pennsylvania Avenue, Ms. Clarke filled the residence with tall, clear cylinders of forsythia, oncidium orchids and cream-colored cymbidium orchids -- some of the first lady's favorites.    From Wordnik.com.  [Choosing a New Flower Czar] Reference

If you have orchids in small pots (I have one miniature variety of oncidium) then you might need to water once or twice a day but if you have a medium sized plant, particularly one with a psuedobulb at the base of the leaves where it can store up water, then once a week is usually sufficient.    From Wordnik.com.  [Scribbit | A Blog About Motherhood in Alaska] Reference

This oncidium Sharry Baby’ is a workhorse plant with several blooms through the year.    From Wordnik.com.  [Bloom Days January 2008 « Fairegarden] Reference