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 | Lunulariales H.Klinggr. |
| family | Lunulariaceae H. Klinggr. |
| genus | Lunularia Adans. |
| species | Lunularia cruciata (L.) Dumort. ex Lindb. - Crescent Moonwort |
| subspecies | Lunularia cruciata subsp. thaxteri (A.Evans et Herzog) R.M.Schust. |