Haasiella is a fungal genus in the family Hygrophoraceae.[4] It is a monotypic genus that contains only the species Haasiella venustissima.[1]Haasiella splendidissima, formerly considered to be a distinct species based on its 4-spored basidia, was found by a DNA study to be synonymous with Haasiella venustissima.[1]Haasiella venustissima is only known from Europe and is saprotrophic on wood.[1][5]Haasiella was described as a new genus in 1966 by Czech mycologists František Kotlaba and Zdeněk Pouzar.[6] It is most closely related to the genus Hygrophorus.[1]
^ abcdeVizzini A, Consiglio G, Setti L, Ercole E (2012). "The phylogenetic position of Haasiella (Basidiomycota, Agaricomycetes) and the relationships between H. venustissima and H. splendidissima". Mycologia. 104 (3): 777–784. doi:10.3852/11-334. hdl:2318/121165. PMID22314595. S2CID6799359.