To exist, a plant, just like a human, needs nourishment. In this volume, Koelsch focuses on a very special group of plants: the strangler and parasite plants. He outlines their development from a flowering plant that has transitioned from a purely raw food diet to a more or less extensive nutrition with organized substances. Individual representatives of this plant group are discussed in detail, as well as their habitats and the corresponding conditions. This is a high-quality reprint of the original edition from 1912.