Agaricales is an order of fungi that primarily includes mushrooms, characterized by their umbrella-shaped fruiting bodies. This diverse group features both edible and toxic species, with notable examples like Agaricus bisporus, commonly known as the button mushroom, and Amanita muscaria, the iconic fly agaric. Members of the Agaricales typically have gills or pores on the underside of their caps, where spores are produced. They play essential roles in ecosystems as decomposers, breaking down organic matter, and some form symbiotic relationships with plants, aiding in nutrient absorption through mycorrhizal associations.