Nepenthes rigidifolia
 Nepenthes rigidifolia /nɨˈpɛnθiːz ˌrɪdʒɪdɨˈfoʊliə/ is a tropical pitcher plant endemic to Sumatra where it grows at elevations of 1000–1600 m above sea level.The specific epithet rigidifolia is formed from the Latin words rigidus (rigid) and folia (leaves) and refers to the plant's stiff coriaceous leaf blades. Tahul-tahul has been recorded as a local vernacular name for this species.