Kingdom Fungi R.T.Moore (1980) - fungi Phylum Chytridiomycota Doweld (2001) Class Polychytriomycetes Tedersoo, Sánchez-Ramírez, Kõljalg, Bahram, M. Döring, Schigel, T.W. May, M. Ryberg & Abarenkov (2018) [monotypic] Order Polychytriales Longcore & D.R. Simmons (2012) Family Polychytriaceae Doweld (2014) Genus Polychytrium Ajello (1942) [monotypic] Polychytrium aggregatumᵀ Ajello (1942)