Agaricus texensis, commonly known as the gasteroid agaricus, is a species of fungus in the Agaricaceae family. Found only in southwestern and western North America, it is adapted for growth in dry, semiarid habitats. The fruit bodies are secotioid, meaning the spores are not forcibly discharged, and the cap does not fully expand. Unlike other Agaricus species, A. texensis does not develop true gills, but rather a convoluted and networked system of spore-producing tissue called a gleba....