Most fungi thrive in wet and humid environments. Dystrophic fungi grow on dead or decaying organisms and collect nutrients from them. Parasitic fungi grow on plants and animals. Parasitic fungi can be endoparasitic, ectoparasitic, intercellular and intracellular. The dead fungi that grow on the excrement of herbivores are called coprophilous. Algae and fungi live as mitozoites. They can live as mitozoa on the leaves and roots of higher plants. Such fungi are called mycorrhizal fungi and the related relationships are called mycorrhizae. Epiphytic fungi live on the bark or exterior of higher plants.