Gastromycetes is a type of fungi that grows on a variety of substrates. Synonyms for gastromycetes include stomach fungi, gastroid fungi, or simply gasteromycetes. These mushrooms are characterized by the way they produce their spores, which are enclosed within a sac-like structure called a gleba. Gastromycetes come in a wide range of colors and shapes, from the small and unremarkable to the bizarre and striking. They can be found in many habitats, from forests and meadows to deserts and wetlands. These fungi play an essential role in nutrient cycling and contribute to the diversity of ecosystems.