Hi,

I think you have Chinese Kale. It kinda looks like broccoli. Here is a link.

DL

Here is a link that might be useful: Chinese Kale picture & info

I don't think it's that, but that was a very good lead. The leaves don't look right. I saw a picture of Broccolini flowers, which looked very similar, but that's a hybrid, so it's probably not that. The leaves look a lot like Rapini.

What's confusing me though, is that the flower stalk is really negligible. Did it perhaps bolt before the stalk grew to full length? Does that make sense?