Phylogenetic analyses place the monotypic Dryopolystichum within Lomariopsidaceae
The monotypic fern genus Dryopolystichum Copel.combines a unique assortment of characters that obscures its relationship to other ferns.Its thin-walled sporangium with a vertical and interrupted annulus, round sorus with peltate indusium, and petiole with several vascular bundles place it in suborder Polypodiineae, but more precise placement has el