Links to genera Ferns and Horsetails (Monilophytes) Clubmosses and Quillworts (Lycophytes)
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Blechnum | Hard Ferns, Water Ferns
Rhizome scaly; leaves in tufts, more or less tough and leathery, usually evergreen, dimorphic (i.e. having fertile and non-fertile leaves of different shapes), pinnatifid to 1-pinnate, pinnae entire, veins free; sori on either side of midrib, usually joined into a single row, with indusium of the same shape as sorus.
Between 150 and 200 species worldwide, although the majority are from the southern hemisphere. One species native in Britain and Ireland; one (possibly more) species naturalised; and one (B. penna-marina) has been naturalised but not persisting.
* indicates introduced species. |
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