Cypripedium californicum (California lady's slipper)

The California lady’s slipper (Cypripedium californicum) is a member of the orchid genus Cypripedium, the lady’s slipper orchids. It is native to the western United States, where it has a very restricted range and can only be found in the mountains of southwestern Oregon (Kalmiopsis Wilderness) and northern California. It prefers the margins of woodland streams in open coniferous forests.

— Wikipedia