Beaman Park, TN
I spotted these in the woods at Umstead State Park. They didn't have any foliage visible, only the stalks of flowers.
Crane fly orchid
The Crane-fly Orchid (Tipularia discolor) is a perennial terrestrial woodland orchid, a member of the Orchidaceae. It is the only species of the genus Tipularia found in North America. This orchid grows a single leaf in September that disappears in the spring. The leaf is green with dark purple spots. The orchid blooms in mid-July to late August. The roots are a connected series of corms. Its roots are edible. They are starchy and almost potato-like.