"The most famous of all pitcher plants is the giant N. rajah, found only on Mount Kinabalu and neighbouring Mount Tambuyukon in Sabah. The pitchers are unmistakable in appearance, being large (≤35 cm high) and ovoid in shape with a huge, vaulted lid. The peristome is expanded and scalloped at the outer edge, while the inner margin is lined with short, sharp teeth. The pitchers rest on the ground and are often reclined, leaning against surrounding objects for support. The tendril joins the leaf blade just below the tip, which is a distinctive feature. The pitchers are usually dark purple in colour while the peristome ranges from red to purple. Nepenthes rajah grows in open, grassy vegetation in sites which are permanently moist. It always grows terrestrially in serpentine soils. There are no habitats of this type along the main summit trail of Mount Kinabalu, so it is not seen by most visitors. However, a small population persists near the newly opened Mesilau Resort, and interested visitors are sometimes taken to see these plants by the staff of Kinabalu Park. Some populations of N. rajah were seriously depleted by over collection in the 1970's. However, most populations are now off-limits to visitors and lie in remote parts of Kinabalu Park. Artificial propagation of plants in Western countries has helped reduce demand for plants collected from the wild, so the long term outlook for the survival of N. rajah in the wild is comparatively good."