Pseudohydnum

Pseudohydnum is a genus of fungi in the family Auriscalpiaceae. The type species, Pseudohydnum gelatinosum, is commonly known as the "false hedgehog" mushroom due to its gelatinous texture and hydnoid hymenophore, which consists of teeth or spines. This species is found in various habitats across the globe, often growing on decaying wood in both coniferous and deciduous forests.

Morphologically, Pseudohydnum gelatinosum is characterized by its translucent, jelly-like fruiting body. The cap is typically fan-shaped or irregularly lobed, and the underside features delicate, downward-pointing teeth. The color can range from whitish to pale gray or even a faint bluish hue. It is generally considered inedible due to its rubbery texture and lack of significant flavor.

The taxonomic placement of Pseudohydnum has been subject to revision. Historically, it was sometimes grouped with other hydnoid fungi. However, molecular phylogenetic studies have placed it firmly within the Auriscalpiaceae family, aligning it with other species that exhibit similar microscopic and macroscopic features, despite its unique gelatinous consistency. Research into its ecological role focuses on its saprobic nature, contributing to the decomposition of woody debris in forest ecosystems.