What is "aleurocystidiellum"

Aleurocystidiellum is a fungal genus of uncertain familial placement in the order Russulales. A monotypic genus, it contains the single species Aleurocystidiellum subcruentatum, a crust fungus that was first described in 1860 by Miles Berkeley and Moses Ashley Curtis. Aleurocystidiellum was circumscribed by Paul Arenz Lemke in 1964.