Hymenogastraceae

Hymenogastraceae is a family of basidiomycete fungi in the order Agaricales. It comprises a group of gilled mushrooms; the family name derives from the type genus Hymenogaster. Taxonomic placement within Agaricales has changed over time as molecular data have clarified relationships among species previously assigned to various genera. Modern classifications recognize Hymenogastraceae as a flexible group that includes several genera; membership has expanded and contracted as new phylogenetic studies are published.

The fruit bodies of Hymenogastraceae species are typically small to medium in size, with a cap and gills, and produce brownish to dark brown spores. Ecologically, the family includes both saprotrophic species that decompose litter and wood and, in some cases, ectomycorrhizal associates with trees. Members are distributed worldwide, with a greater abundance in temperate forests and coastal habitats.

Research and classification within Hymenogastraceae reflect the broader patterns of fungal systematics, where DNA data have driven reorganization of genera and species boundaries. Because taxonomy in this group remains dynamic, authoritative references and up-to-date phylogenetic studies are important for accurate identification and understanding of evolutionary relationships.