Turkeytail is a fan-shaped bracket fungus that has concentric rings of different colours on the surface. The rings are usually browns, buffs, greys and creams but they can be other colours such as red-browns, oranges and maroons. The surface is velvety on young growth but it becomes smoother as the fruiting body ages. The underside is greyish-white. The 'fans' form in layers and are only 1-3mm thick.