Wild Orchid? or just pretty weed?

I was walking around the park this afternoon in very fine drizzle, I clicked lots but didn't get what I wanted, when I came back I looked through the 30 or so pictures and remembered I'd taken this P r e t t y purple flower amongst the grasses. Is is a wild Orchid, I think Maggie took one a little while back, I'll let you decide ;0) I like it anyway.
It's nice on Large, just press L on keyboard
It is here