identification

[ashley]

That does look like it Véronique.  Thank you 🙂
I'll try keying it out when it gets bigger.

Meanwhile, there's a very useful discussion on nomenclature (& confusion!) of these plants on the NARGS forum.

[Véronique Macrelle]

This is another pretty surprise plant
It will no doubt soon produce a few seed pods from cleistogamous flowers. If you want to sow them, you need to pick the pods as soon as they are upright, otherwise they will explode shortly afterwards.