 It is white, smooth (glabrous), solid (that is, not hollow internally), and has an abruptly bulbous base with the shape of a flattened sphere; it may develop longitudinal splits on the sides.The base is often attached to a copious white mycelium—a visual reminder that the bulk of the organism lies unseen below the surface.The ring is membranous, and persistent—not weathering away with time; the ring may be attached to the stem with white fibers.