As Nigel said:

Ideally, you'd be able to create this from the tree of tests that are executed when you create a Concordion suite (using the run command). However, I don't think this is currently possible since Concordion invokes JUnit which invokes Concordion and so on. The JUnit interface doesn't pass the required information back to the calling class.

We could look at this for JUnit 5 though.

For more information: initial Google Group discussion