Pseudocraterellus undulatus is a species of fungus belonging to the family Hydnaceae.

Synonym: Pseudocraterellus undulatus is a small funnel shaped mushroom with tough grey flesh.

Starts as convex or depressed but quickly becomes funnel shaped/infundibuliform with irregular edges and wrinkles.

Hymenium is wrinkled and branching, greyish-brown in colour with distant spacing and decurrent attachment.

Whilst P. undulatus is regarded as an edible mushroom with a mild taste; it may grow too rarely to justify picking.