Analyses of major nutrients in in vitro and ex vitro plant material of Triphyophyllum peltatum, Belongs to publication Winkelmann et al. (2023): WINKELMANN, T., BRINGMANN, G., HERWIG, A. AND R. HEDRICH (2023): Carnivory on demand: phosphorus deficiency induces glandular leaves in the African liana Triphyophyllum peltatum. New Phytologist 239: 1140-1152.