Cypripedium calceolus (lady’s slipper orchid) is a rare and long-lived orchid native to Europe and parts of Asia, known for its distinctive yellow, slipper-shaped flower surrounded by dark red-brown petals. It grows in semi-shaded forests on calcareous soils and depends on specific mycorrhizal fungi for germination and survival. The species is sensitive to habitat disturbance and is often used as an indicator of high conservation value forests.