Platanthera orbiculata is a very striking species, very different from the other plants in the genus. It ranges in a great arc from Washington, Idaho and Montana, through Canada and Alaska and down into the Appalachian Mountains as far south as North Carolina and Georgia.
Like P. obtusata, it is usually found in woodlands rather than in wet and marshy areas. and is easily recognizable not only by its location, but also by its two large pad-like leaves and its flowers which are whitish-green and look like a dragonfly in flight.
The plants are 60-57 cm tall and the individual flowers, usually 10-15 of them, approximately 5 cm in size, among the largest flowers in the genus. It also blooms a bit later than the other Platantheras. We've found it only when the other species were nearly finished flowering in early August.