Nepenthes sumatrana Unknown type category: Sumatra, Sibolga, 0 m, ., Feb. 1856, Teijsmann 535 (U) Unknown type category: Sumatra, Sibolga, 0 m, ., Feb. 1856, Teijsmann 535 (L) Unknown type category: Sumatra, Sibolga, 0 m, ., Feb. 1856, Teijsmann 535 25 Sept. 1992, Nerz 2801 (L)