Nepenthes gracilis Lectotype: Borneo, G. Pamatton, 325 m., Korthals s.n. (L) Isotype: Borneo, G. Pamatton, 325 m., Korthals s.n. (K) Unknown type category: Lobb s.n. Unknown type category: Sumatra, Sibolga by the coast, Feb. 1856, Teijsmann 530 p.p. Unknown type category: Ridley 1473 DerivedUnit#18159<567dc05d-989c-4e6d-84f0-24d6007ec2b8> Unknown type category: 1877–1878, Burbidge s.n. Teijsmann 538 p.p. (L) Teijsmann 538 p.p. (U) Wallich 2244 p.p.