Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Bikonta - bikonts |
| Corticata | |
| Archaeplastida | |
| kingdom | Plantae Haeckel - plants |
| divisio | Marchantiophyta Stotler et Crand. Stotl. in A.J. Shaw et B. Goffinet - liverworts |
| class | Marchantiopsida Cronquist, Takht. et W.Zimm. |
| subclass | Marchantiidae Engl. |
| order | Marchantiales Limpr. in Cohn |
| family | Aytoniaceae Cavers |
| genus | Mannia Opiz |
| species | Mannia gracilis (F. Weber) D. B. Schill & D.G. Long - Graceful Asterella |