The Agaricales are an order of fungi in the class Agaricomycetes (division Basidiomycota).
It is the largest group of mushroom-forming fungi, and includes more than 600 genera and over 25,000 species.
[1] Molecular phylogenetics analyses of ribosomal DNA sequences have led to advances in our understanding of the Agaricales, and substantially revised earlier assessments of families and genera.
[2] The following families are in the Agaricales, according to Kalichman, Kirk & Matheny (2020),[3] with more recent additions and amendments, as noted.
The number of genera and species in each family is taken from Catalogue of Life (2023),[1] unless otherwise noted, and is subject to change as new research is published.