Wikipedia
The Agaricostilbales are an order of fungi in the class Agaricostilbomycetes of the division Basidiomycota. They are further classified in the subclass phragmobasidiomycetidae, which contains fungi with basidia (spore-producing cells) that are divided by septa. The order consists of 3 families, 9 genera, and 43 species. The genus Mycogloea is assigned to the Agaricostilbales, although it is of uncertain placement with respect to its family.
Agaricostilbales was circumscribed in 1989 by mycologists Franz Oberwinkler and Robert Bauer, containing Agaricostilbaceae and Agaricostilbum as the type family and genus, respectively, and the related family Chionosphaeraceae, originally circumscribed in 1982. The monogeneric family Kondoaceae was added to the order in 2006. Species in the Agaricostilbales lack cystidia, and have long basidia with transverse septa. They produce basidiospores that are hyaline (translucent) and non- amyloid.