Links to genera Ferns and Horsetails (Monilophytes) Clubmosses and Quillworts (Lycophytes)
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| Polystichum | Shield Ferns
Small to medium-large terrestrial ferns. Rhizome short, very scaly. Leaves in tufts, more or less evergreen; ususally 1-3 pinnate, rarely more; in many species pinnae have an upward-pointing lobe at base; veins free; sori round, in one or two rows; indusium peltate when present.
About 180 species worldwide. Three species native in Britain and Ireland, one species introduced and naturalised in Britain.
* indicates introduced species.
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