of N. tobaica are similar to those of N. adnata, although the stem and lamina are quite different. Natural hybrids Five natural hybrids involving N. tobaica have been recorded to date; specifically, crosses with N. ampullaria, N. reinwardtiana, N. rhombicaulis, N. spathulata, and N. spectabilis. Notes a.The Latin description of N. tobaica from Danser's monograph reads: Folia mediocria sessilia, lamina lineari-lanceolata, nervis longitudinalibus utrinque 0-1, raro 2, basi lata semiamplexicauli ; ascidia rosularum ignota ; ascidia inferiora parte inferiore anguste ovata, medio angustata, os versus infundibuliformia, alis 2 fimbriatis, peristomio operculum versus acuto, cylindrico, 1/2-1 mm lato, costis 1/3-1/4 mm distantibus, saepe indistinctis, dentibus fere 0 ; operculo rotundato-elliptico, facie inferiore plano ; ascidia superiora parva, e basi infundibuliformi parte inferiore paulum ventricosa, medio leviter angustata, os versus paulum infundibuliformia, costis 2 prominentibus, peristomio operculum versus acuto, cylindrico, 1/2-1 mm lato, costis 1/3-1/4 mm distantibus, saepe indistinctis, dentibus fere 0 ; operculo orbiculari v. rotundato-elliptico facie interiore plana ; inflorescentia racemus pedicellis 13-15 mm longis fere omnibus 2-floris ; indumentum in inflorescentiis et ascidiis parcum stellatum, ceterum 0. b.In addition to the earliest specimen, collected by Teijsmann in 1856, Danser lists 11 separate collections of N. tobaica. References Further reading Akhriadi, P. 2007. Kajian taksonomi hibrid alami Nepenthes (Nepenthaceae) di Kerinci. Working paper, Andalas University, Padang. Abstract Bonhomme, V., H. Pelloux-Prayer, E. Jousselin, Y. Forterre, J.-J. Labat & L. Gaume 2011. Slippery or sticky? Functional diversity in the trapping strategy of Nepenthes carnivorous plants. New Phytologist 191(2): 545–554. Hernawati & P. Akhriadi 2006. A Field Guide to the Nepenthes of Sumatra. PILI-NGO Movement, Bogor. Hopkins, M., R. Maulder & B.[R.] Salmon 1990. Carnivorous Plant Newsletter 19(1–2): 19–28. Kitching, R.L. 2000. Food Webs and Container Habitats: The natural history and ecology of phytotelmata. Cambridge University Press, Cambridge. Mansur, M. 2001. In: Prosiding Seminar Hari Cinta Puspa dan Satwa Nasional. Lembaga Ilmu Pengetahuan Indonesia, Bogor. pp. 244–253. McPherson, S.R. & A. Robinson 2012. Field Guide to the Pitcher Plants of Sumatra and Java. Redfern Natural History Productions, Poole. Meimberg, H., P. Dittrich, G. Bringmann, J. Schlauer & G. Heubl 2000. Molecular phylogeny of Caryophyllidae s.l. based on matK sequences with special emphasis on carnivorous taxa. Plant Biology 2(2): 218–228. Meimberg, H., A. Wistuba, P. Dittrich & G. Heubl 2001. Molecular phylogeny of Nepenthaceae based on cladistic analysis of plastid trnK intron sequence data. Plant Biology 3(2): 164–175. Meimberg, H. 2002. Ph.D. thesis,