This is a self set survivor of my original collection of Dactylorhiza maculata. It settled itself into a Hosta tub and hasn't looked back.The clone is now multi-headed and a bit of a favourite of MrsG.
Please forgive the size of the photo but I really thought it deserved it for the detail.
For those who don't know the story, I had quite a collection of hardy terrestrial orchids and was paid a sneak visit by a pathogen which almost wiped out the entire collection. The survivors from that time are self-set seedlings which settled in the pots and tubs of other plants. These plants are now on the increase with MrsG constantly finding orchid leaves in many different tubs.
If you'd like to see a few photos of the D. maculata I used to have just ask.