This page's list covers the ferns and allies (Lycopodiopsida, Equisetopsida and Pteridopsida) found in Great Britain and Ireland. For the background to this list see parent article List of the vascular plants of Britain and Ireland. Status key: * indicates an introduced species and e indicates an extinct species. Class Lycopodiopsida Order Lycopodiales Family Lycopodiaceae (clubmosses) Order Selaginellales Family Selaginellaceae (spikemosses) Order Isoetales Family Isoetaceae (quillworts) Class Polypodiopsida (ferns) Order Equisetales Family Equisetaceae (horsetails) Order Ophioglossales Family Ophioglossaceae (adder's-tongues) Order Osmundales Family Osmundaceae (royal ferns) Order Polypodiales (polypod ferns, cathetogyrates) Family Pteridaceae (maidenhair fern family) Family Hymenophyllaceae (filmy ferns, bristle ferns) Family Polypodiaceae Family Dennstaedtiaceae (bracken family) Family Thelypteridaceae (marsh ferns) Family Aspleniaceae (spleenworts) Family Woodsiaceae (cliff ferns) Family Dryopteridaceae (wood ferns) Order Salviniales Family Marsileaceae (pepperworts) Family Salviniaceae Order Cyatheales (tree ferns etc.) Family Dicksoniaceae Family Blechnaceae See also Notes Jersey fern (Anogramma leptophylla) is present in the Channel Islands as a native species, but does not occur in Britain or Ireland. Irish spleenwort (Asplenium onopteris) is native only to Ireland; it is represented in Britain only by an introduced population in North Wales. External links 01