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 - ferns and horsetails |
| class | Polypodiopsida Cronquist, Takht. & Zimmerm. |
| order | Polypodiales Link |
| family | Cystopteridaceae (Payer) Schmakov |
| genus | Cystopteris Bernh. - bladderfern |
| species | Cystopteris laurentiana (Weatherby) Blasdell - St. Lawrence Bladderfern |