Nodding Lady's Tress Orchid

This common orchid is flowering abundantly in wet sandy meadows in northern Indiana. The identification of this one is assumed - I didn't have a field guide in hand and didn't make a collection.

For anyone with an interest in wild orchids, a visit to Peter Grube's Flickr site is a must. In addition to stunning orchid shots he has a lot of other work displayed, and all of it is excellent beyond all measure!
http://www.flickr.com/photos/avocet07/