Rock Creek Area

All orchids have 3 petals and 3 sepals. On the Sierra bog orchid (Platanthera dilatata var. leucostachys) the lower center petal is wider below the middle, then narrowing toward the tip. The upper sepal and the two upper petals curve together to make a hood. The very long green spur is elegantly curved at the back of flower and points downward but is hard to see. Look at the two partially open flowers near the top.