The mushroom is a fleshy fungus characterized by a semi-round to rounded cap, depending on the variety. Its color can range from white and light cream to light or dark brown. The smooth skin may show light scaling when environmental humidity is low. The stipe (foot) is white, straight, and cylindrical, attaching to the mycelium—a network of filaments growing in the substrate. Mushrooms vary in size, influenced by their growing conditions, and are available year-round.