Cypripedium acaule, as Aaron already reported.
The ones on your property are nice and pink. I have seen them along the
French River in Ontario where they are a vivid rose color.
The ones we have here are extremely pale pink. I've often wondered if
the difference is genetic or environmental. I assume genetic. The web
site below has a few pictures of the ones I find in this area:
http://www.geocities.com/tlswilso/Panther_Mountain.html
Note that they bloom here in late June.

Steve in the Adirondacks of northern NY



Bob wrote:

So I was in Nova Scotia this summer walking on a new piece of land I
bought when I spotted all these wild orchids. I am a Cattleya guy so I
don't know anything about orchids like these. The natives just call
them ladyslippers but I would like to know what species they are -
anybody know? You can see the pic at
www.cattleya.us/images/orchid4c.jpg. My apologies for the poor quality
pic but the mosquitos were eating me alive.

thanks,
Bob