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 | Jungermanniopsida Stotler et Crand.-Stotl. |
| subclass | Pelliidae He-Nygrén, Juslén, Ahonen, Glenny et Piippo |
| order | Pelliales He-Nygrén, Juslén, Ahonen, Glenny et Piippo |
| family | Pelliaceae H.Klinggr. |
| genus | Pellia Raddi |
| species | Pellia undulata P.Kumm. |