I guess I'm glad I didn't see your post for a couple of days, as I always forget that plant's name and never seem to bookmark a page for it. I knew it was a non-native orchid! :)
I have it in my yard (but I don't think I brought it to the swap as the ones I've tried to transplant just die...but maybe 8 years ago I may have tried?) but it's not aggressive. However it does pop up where it wants to, and it will do so forever (kind of like ostrich fern, I'm finding! Although those survive transplanting). I, too, wish it were one of the special native orchids.
