| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Unikonta |
| system | Opisthokonta Cavalier-Smith, 1987 |
| kingdom | Fungi Whittaker, 1959 - fungi |
| divisio | Ascomycota Caval.-Sm. - sac fungi |
| subphylum | Pezizomycotina O.E. Erikss. & Winka |
| class | Lecanoromycetes |
| subclass | Ostropomycetidae |
| order | Ostropales |
| family | Thelotremataceae |
| genus | Thelotrema Ach. - barnacle lichen |
| species | Thelotrema eximium R. C. Harris |