We saw these for the first time this year and for the first time at this location. We were traveling through Sherman Pass in north-central Washington and found them at a place where we had been told to look by a friend. With them we found a few Platanthera dilatata var. leucostachys that were near the end of their season. Epipactis gigantea is the only native species from the genus in North America. It is known as the Stream Orchid for its love for river and lakeside sites and as the Chatterbox for its moveable lip which "chatters" in the slightest breeze like a little mouth. The plants we see are usually not taller than 60 cm and carry six to ten 3 cm flowers.
Platanthera dilatata var. leucostachys