The lingzhi mushroom is a polypore fungus belonging to the genus Ganoderma. Its red-varnished, kidney-shaped cap and peripherally inserted stem gives it a distinct fan-like appearance. When fresh, the lingzhi is soft, cork-like, and flat. It lacks gills on its underside, and instead releases its spores via fine pores.
- used as a means to 'strengthen immunity' among patients with cancers.