Nepenthes bicalcarata

Nepenthes bicalcarata (/nɪˈpɛnθiːz baɪˌkælkəˈrɑːtə, - bɪˌkælkəˈreɪtə/; from Latin for "two-spurred"), also known as the fanged pitcher-plant, is a tropical pitcher plant which is endemic to Borneo. It is a vine up to 40 m (130 ft) length. It is a myrmecophyte noted for its mutualistic association with a species of ant, Camponotus schmitzi. As an ant-fed plant it lacks many of the features that characterise the carnivorous syndrome in Nepenthes, including viscoelastic and highly acidic pitcher fluid, the waxy zone of the pitcher interior, and possibly even functional digestive enzymes.