Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Unikonta |
| system | Opisthokonta Cavalier-Smith, 1987 |
| kingdom | Fungi Whittaker - fungi |
| divisio | Basidiomycota R. T. Moore - club fungi |
| subphylum | Pucciniomycotina |
| class | Mixiomycetes |
| order | Mixiales |
| family | Mixiaceae |
| genus | Mixia C.L. Kramer |
| species | Mixia osmundae (Nishida) C.L. Kramer |