Off course that's an Oncidium. Still no ID. Here is a flower detail.

Here is apicture of the flowers of Onc sphacelatum. Flowers are much darker and the sprays nearly 3' long.

Nick

Tremendous show! The things are nearly impossible to ID. I have one that I even sent a couple of pictures of to Harry Zelenko, and he didn't know what it was either. I'll post a picture later in the summer, when it blooms.
Tucker

It is still very lovely.

Love them. I have one which I kept because it was given to me years ago by a friend who is no long with us. Never was crazy about the flowers until it got large and now sends up huge sprays which last most of the summer. Love the first pic, looks like a shrub.

Jane