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 | Agaricomycotina Doweld |
| class | Agaricomycetes |
| subclass | Agaricomycetidae |
| order | Boletales - boletes |
| family | Suillaceae Besl & Bresinsky 1997 |
| genus | Suillus Gray |
| species | Suillus acidus (Peck) Singer |