This species has the thinnest plates of all the species of this genus, forming expansive laminae which hug the substrate but which are usually physically attached only at one point at the centre or to one side. In this their colony form more resembles Agaricia than other Mycetophyllia. Surfaces are much smoother than other Mycetophyllia, and do not usually have ridges.

Corallites are similar in size to other Mycetophyllia (much larger than Agaricia). They tend to run in concentric rows and may be meandroid at the periphery but tend to be more clearly solitary over the older parts of the colonies.

Colour is usually dark, with a glistening appearance.