Postia ptychogaster, commonly known as the powderpuff bracket, is a species of fungus in the family Fomitopsidaceae.

The fungus, which is found in Europe and North America, resembles a powdery cushion that fruits on stumps and logs of rotting conifer wood.

In this stage of its life cycle, the "cushion" is a mass of chlamydospores.

This Polyporales-related article is a stub.

You can help Wikipedia by expanding it.