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 | Monilophyta Cantino et Donoghue - horsetails |
| class | Psilotopsida D. H. Scott |
| order | Ophioglossales Link |
| family | Ophioglossaceae (R. Br.) Agardh |
| genus | Botrychium Sw. - grapefern |
| species | Botrychium paradoxum W.H. Wagner - Peculiar Moonwort |
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