I know calabrese only as a type of sausage.

A googleization of calabrese, broccoli reveals hundreds of sites; I looked at the first two pages and they were all based in Ireland or the UK. I can't find a North American equivalent, but I ain't giving up. I'll ask at the greengrocer's tomorrow.

There's something sold in the US called broccolini; it's a recently-developed hybrid of broccoli and kale (I think).

And rabe is also called 'rappy.'