Polkimillaceae

Polkimillaceae is a family of fungi within the order Agaricales. This family is characterized by its macroscopic fruiting bodies, which are typically agaricoid, meaning they have a cap and stem. The gills are usually decurrent, running down the stipe. Microscopically, the basidiospores are typically smooth and hyaline, though some species may exhibit pigmented spores. The context of the gills and the microscopic features of the hyphae, such as the presence or absence of clamp connections, are also important for classification within this family.

The species within Polkimillaceae are often found in terrestrial habitats, growing on decaying wood or in soil. They are saprotrophic, playing a role in the decomposition of organic matter. The distribution of Polkimillaceae is widespread, with species found in various temperate and tropical regions worldwide.

Historically, many genera now placed in Polkimillaceae were previously assigned to other agaric families based on morphological characteristics. However, advancements in molecular phylogenetic studies have led to a reevaluation of their taxonomic positions, resulting in the establishment of this distinct family. Research continues to refine the understanding of the relationships within Polkimillaceae and its placement within the broader Agaricales order.